On warzone if you have a weak AMD CPU compared to your AMD GPU, you will lose performance. SAM actually eats up CPU performance to provide more GPU performance. This will make a CPU bottleneck. My 5700X3D + RX 7800XT performs better with SAM off. CPU time with sam off is 4-5ms; SAM on 5-6ms. GPU time is running at 4-5ms
Also in MW3 Zombies if you have SAM On, when you look at the middle of the map (Old Town) fps drastically decreases. SAM Off solves that. (Thanks to BeefyTech channel video)
Does anybody know how to disable SAM for specific game (warzone) because when i go in tuning and global u can disable SAM, , but when u have more games added for different underclocks etc... there is no option for SAM ... Thanks
Tbh I only trust your tests as valid source. Other youtubers give as results like "I just prefer this" without any exact testing. Keep up the good work!👍 🙂
Thank you so much for your videos. I honestly trust your videos more than anyone else’s, simply because of how much you explain. I’m very thankful that you made this your hobby lol
With the Nvidia system you need to use inspector to enable it in not official supported games. Especially mw3, enable in bios, game config and inspector, redo shaders. Did you do this? Also you should test warzone not the in game benchmark. Measure 0.1% lows you will see the game runs horribly on any system with rebar on. Even though it boosts fps in a gpu bound situation. 0.1% lows are much more important. With the amd system disabling in the driver doesn't work it needs to be done via bios.
Thanks a lot for watching man! Ah I see, so my results for MW3 on the Nvidia GPU are identical because MW3 not officially supported 🤦♂️ I didn't force ReBAR using the inspector and I also didn't benchmark in Warzone. Guess I will have to specifically test in Warzone on my all-AMD system to observe the 1% low issue. Frankly, I don't think forcing ReBAR using the inspector makes sense...
Love your channel. Videos like this are the only ones worth watching. Finding optimized settings videos where everything is actually tested is difficult to find. Videos that provide dubious claims regarding performance improvements. There's just so much misinformation and garbage tier videos... It just isn't as click-baity unfortunately smh. Keep on going on! ✌
I assume ATS/ETS2 are not supported, even though they just updated their game engine? I mostly play ATS on my 2700x/16GB/GTX 1080ti and lately fps has been getting worst with each game version update to their game engine.
Should have tried forcing it on via Nvidia Inspector, in titles that natively don't support it-- more specifically in games that are RAM/VRAM heavy, Think Microsoft Flight Simulator, XPLANE, F1 racing, and Digital Combat Simulator (DCS). These games are all generally pretty RAM/VRAM heavy, especially at higher resolutions/in VR
@Game Guides 10900k DDR4-4400 & 7900XTX MW3, low settings, Game Benchmark At any resolution, with Rebar On, my cpu 1% lows and overall 1% lows drop all they way down to 130fps. With Rebar Off the 1% lows on cpu and thus overall 1% lows jump to 240 +fps. Rebar Off seems like the way to go for my system.
I really never thought that SAM could be affecting my sistem like that, I have an i3 10100F with an RX 6700XT (I know about the bottle neck), and I will make tests to see if the performance reduction is there for me too
Game feels smoother with SAM disabled in the Adrenalin software, but when running benchmarks on MW2 multiplayer results are very similar, SAM off gave 5fps more, which is within the margin of error so I guess I'll leave it off
In this testing did you just enable default rebar in Nvidia control panel or did you manually go into profile inspect and enable rebar globally for all games? Nvidia has the option to force rebar for all games regardless, you just need to use the profile inspector to set it as on in the global profile.
Via bios. I didnt feel like enforcing it via the inspector would be great but given the fact none of the games I tested actually support rebar on Nvidia I probably should have.. ah well
SAM does some extra things on top of changing the BAR size. It's been too long so I don't remember anymore but SAM was always a bigger performance improvement than Nvidia's solution. I believe it was also less likely to decrease performance as well but I could be making that up.
I’m running i71200H & RTX 3060 on the Nvidia control panel resizable bar doesn’t show for me ! But in the Game File MW3 It says is Enable’ helps pls should I turn it off ?
Well let me just say I have the 7950X3D paired with RX7900XTX on ddr5 system memory of 32gb using resizeable bar and I must say ALL my game performance is phenomenal! The intent of that build is to blow away any and all future playstations! Yes I put alot of money into it but with all I can do with this amount of power is ridiculous! Although my setup is major OVERKILL but I wanted to blow the competition out the water!
@@TechGuides i mean amazing performance and have no problems smooth powerful gaming performance! What i don't understand is those who game why do they feel the need to buy a 4090, but sleep on that 7900XTX
MW3 in the benchmark with 7900 xtx and 5800x3d I get 10% higher 1% lows with SAM off, 220 vs 200, but 10% lower average, 300 vs 330. The CPU performance is way better better with it off since i dont have the best cpu
why i have a problem whit i9-13980HX and RTX 4080 whe i use re-bar i have very big fps drops and dont know where can be the problem laptop is rog scar 16 whit rebar on fps drops for cpu to 130fps when re-bar off fps drops are to 230 fps
I have 4k so i presume rebar off will have less impact btw try amd system without massive cache cpus some games prefers these so much it even overcomes the negative impacts which rebar can have compared to cpus without x3d cache and results may vary also ddr4/ddr5 specifying this in your results also can help what to expect of that specific combination but i have Intel system i mean cpu and gpu and some ssds but even with Arc in one game it does not matter if rebar is on or off it does not care also going from 1440p to 4k 60fps locked gpu usage have the same average gpu usage and that's around 75-80% ...weird 😐
Thats odd... There is another way to check if rebar is enabled: www.reddit.com/r/Amd/comments/l5jijg/comment/gkvfpy2/? check if it says "large memory range" in your GPU resource tab in the device manager. Still, I would probably try to re-install your GPU drivers
To my understanding L3 cache on CPU and GPU are very important for rebar/sam to work properly to boost performance. Your benchmark results are expected. i9 13900k doesn't have L3 cache, rtx 4080 doesn't have L3 cache. This is why I love AMD hardware because they have big L3 caches that is beneficial for gaming.
@@TechGuides yeah I know that too. But what I understand: from dram >> L3 (buffer) >> L2 >> L1 And AMD called them infinity cache which has something to do with smart access memory
What about the "Core Isolation" option from Windows defenden in Windows 11? I've heard it's costing people 50 FPS on average if they turn it on. (Memory integrity)
you need to make another test in all 4 maps in warzone, you will be surprised. on big map urzikistan BR/zombies you will get fps increase with rebar OFF and increase with rebar ON on smaller maps, i believe this works bad on big map that needs to load. thats why its so good in mw3 cuz they all tiny map.
Gotcha, I've read from a couple of viewers that the results are quite different on big map. I will likely do some tests on my AMD system (rebar in MW3 doesn't appear to be supported by Nvidia GPUs) and make a short about it 👍
What would be a good settings to play with i have a lot of input lag on warzone? I play 1440p with my 3070ti which is 100% bottleneck. I lowered the vram to 50 with low settings but i still feel a delay. V sync is off.
Bit of a nonsense video because AMD/Nvidia architecture value CPU very little. So enabling REBAR has no effect. Same with E Cores +- 5%. So nothing. AMD/Nvidia architecture is mainly standalone single silicon architecture where CPU play a very small role. Almost all of the tasks are for the GPU. This means queuing and waiting and lot of errors when more is demanded. INTEL in the other hand via REBAR almost double the performance utilizing the CPU to split the tasks. A770 225W and 13th or 14th top INTEL CPU 253W max you see power and that means performance. But the current testing we use for single silicon architecture for AMD/Nvidia you only see half the performance of INTEL. Plus INTEL ARC architecture there is no queuing or waiting. Every frame is perfect. This is why A770 beats 4070ti at 4k. A770 experience to beat it you need +120FPS from 4070ti. And when we follow this to Battlemage that will have 250-275W and Arrow Lake on Z890 motherboard at 295W extreme we get 570W of performance. 5080 for example only has 400W and you can't count the CPU. Here is the catch Z890 board has PCI 5.0 with direct lane to CPU without restrictions. REBAR on steroids. So if Alchemist was missing a bit of optimal performance from pairing, Battlemage won't have any of that. It will effectively turn your graphics to dual silicon performance. It was already that with Alchemist but this will be a huge leap. Yet don't forget XeSS XMX is as good as DLSS and APO has a promise on supported games to give 10-50% boost.
![อิสราเอลโดนอิหร่านถล่มหนักกว่าที่คุย : [คุยผ่าโลก worldtalk]](http://i.ytimg.com/vi/R8gIN-MQhWw/mqdefault.jpg)
On warzone if you have a weak AMD CPU compared to your AMD GPU, you will lose performance. SAM actually eats up CPU performance to provide more GPU performance. This will make a CPU bottleneck.
My 5700X3D + RX 7800XT performs better with SAM off. CPU time with sam off is 4-5ms; SAM on 5-6ms.
GPU time is running at 4-5ms
Thanks for providing an additional data point! Pinned so others will also see this.
Also in MW3 Zombies if you have SAM On, when you look at the middle of the map (Old Town) fps drastically decreases. SAM Off solves that. (Thanks to BeefyTech channel video)
MW3 For 7900 xtx and 5800x3d I get 10% higher 1% lows with SAM off 220 vs 200, but 10% lower average, 300 vs 330.
Does anybody know how to disable SAM for specific game (warzone) because when i go in tuning and global u can disable SAM, , but when u have more games added for different underclocks etc... there is no option for SAM ...
Thanks
On urzikstan with 7800x3d and 7900xtx combo i get FPS drops from 300 to 20-40 every 4-5 seconds, is this bugged?
Would be curious to see the AMD CPU/Nvidia GPU combo to see how similar/different it would be compared to the Intel/AMD combo. Great video overall!
I'd expect there not to be much of a difference to my Intel / Nvidia system but I'll try to test it sometime in the future :)
thank you for your detailed videos! hope to see a video about "hardware accelerated gpu scheduling"
Cheers :) Thanks for the suggestion!!
@TechGuides boosting the suggestion on HAGS too!!
We need more people like you. I won't trust anyone without providing analysis on TH-cam.
Appreciate it
Tbh I only trust your tests as valid source. Other youtubers give as results like "I just prefer this" without any exact testing. Keep up the good work!👍 🙂
Thank you so much for your videos. I honestly trust your videos more than anyone else’s, simply because of how much you explain. I’m very thankful that you made this your hobby lol
Thank you so much for the kind comment :)
This was great. I have AMD CPU and Nvidia 4070 Ti Super GPU. I’ll have to check if Rebar is enabled when I play Starfield.
With the Nvidia system you need to use inspector to enable it in not official supported games. Especially mw3, enable in bios, game config and inspector, redo shaders. Did you do this? Also you should test warzone not the in game benchmark. Measure 0.1% lows you will see the game runs horribly on any system with rebar on. Even though it boosts fps in a gpu bound situation. 0.1% lows are much more important.
With the amd system disabling in the driver doesn't work it needs to be done via bios.
(Bad 0.1% lows talking about mw3 exclusively)
Thanks a lot for watching man! Ah I see, so my results for MW3 on the Nvidia GPU are identical because MW3 not officially supported 🤦♂️ I didn't force ReBAR using the inspector and I also didn't benchmark in Warzone. Guess I will have to specifically test in Warzone on my all-AMD system to observe the 1% low issue. Frankly, I don't think forcing ReBAR using the inspector makes sense...
On My system 7800x3d and 7900xtx i allways get FPS drops every 4-5 sec (with Sam on)
On my i914900k rebar off lowers my 0.1% lows so i keep it on
Never heard of the RTX 4800
Shh dont tell anyone 🤣
Temu video card
GTX 480
Love your channel. Videos like this are the only ones worth watching. Finding optimized settings videos where everything is actually tested is difficult to find. Videos that provide dubious claims regarding performance improvements. There's just so much misinformation and garbage tier videos... It just isn't as click-baity unfortunately smh. Keep on going on! ✌
I couldnt agree more! Thank you for the super kind comment ❤️
I assume ATS/ETS2 are not supported, even though they just updated their game engine?
I mostly play ATS on my 2700x/16GB/GTX 1080ti and lately fps has been getting worst with each game version update to their game engine.
You said "Counterstrike2 ", subscribed for that game.
Awesome, I planned to do a full benchmark of all options for CS2 next week :)
Should have tried forcing it on via Nvidia Inspector, in titles that natively don't support it-- more specifically in games that are RAM/VRAM heavy, Think Microsoft Flight Simulator, XPLANE, F1 racing, and Digital Combat Simulator (DCS). These games are all generally pretty RAM/VRAM heavy, especially at higher resolutions/in VR
@Game Guides
10900k DDR4-4400 & 7900XTX
MW3, low settings, Game Benchmark
At any resolution, with Rebar On, my cpu 1% lows and overall 1% lows drop all they way down to 130fps.
With Rebar Off the 1% lows on cpu and thus overall 1% lows jump to 240 +fps.
Rebar Off seems like the way to go for my system.
Yeah I observed exactly the same behavior on my Intel + AMD system!
I really never thought that SAM could be affecting my sistem like that, I have an i3 10100F with an RX 6700XT (I know about the bottle neck), and I will make tests to see if the performance reduction is there for me too
Game feels smoother with SAM disabled in the Adrenalin software, but when running benchmarks on MW2 multiplayer results are very similar, SAM off gave 5fps more, which is within the margin of error so I guess I'll leave it off
In this testing did you just enable default rebar in Nvidia control panel or did you manually go into profile inspect and enable rebar globally for all games?
Nvidia has the option to force rebar for all games regardless, you just need to use the profile inspector to set it as on in the global profile.
Via bios. I didnt feel like enforcing it via the inspector would be great but given the fact none of the games I tested actually support rebar on Nvidia I probably should have.. ah well
I have intel system 14900k and resize bar on helps with 0.1% lows in War-zone
With rebar off 0.1% lows drop more
Keep it on
SAM does some extra things on top of changing the BAR size. It's been too long so I don't remember anymore but SAM was always a bigger performance improvement than Nvidia's solution. I believe it was also less likely to decrease performance as well but I could be making that up.
That seems to line up well with what I observed. Yes there are additional improvements over the BAR size for sure (also the Nvidia implementation)!
how does memory latency/bandwidth affect ReBAR?
Next do 😊does a power supply give you higher performance
amd cpu + nvidia gpu would be interesting
Interesting, I havent considered that a popular setup but now Im also intrigued 😅
I think it's one of the more popular setups. Especially with the older gen Ryzen (5000 series)
@@TechGuides It's one of the most common setups tho. Best CPUs + Best GPUs, the best of both worlds.
You missed very important pc setup based on amd processor and nvidia gpu, like my rig R7 7800X3d paired with RTX4090
I don't really expect this to perform different than my Intel + Nvidia system but if I have some time I could do some quick tests!
@@TechGuides would be great, thank you
I’m running i71200H & RTX 3060 on the Nvidia control panel resizable bar doesn’t show for me ! But in the Game File MW3 It says is Enable’ helps pls should I turn it off ?
Great video, but what about the VRAM usage since it affects how the memory is accessed? Was there an increase or decrease?
From my benchmarks I can see that VRAM usage went slightly up with Rebar enabled
Thank You for the video!
Thank you for watching!
I need to test my Ryzen 9 5950x with my 7900 XTX to see if having REBAR disabled actually gives me better performance..
Great technical video! Awesome data 💯
Cheers!
Amazing work like you always do bro ❤ What about AMD CPU + Nvidia GPU ?
Thank you 😊 Didnt test it (yet)
Amazing video thanks alot! But didn't you want to add amd cpu+nvidia gpu combo? Would that make any change?
Thanks! I'd expect there not to be much of a difference to my Intel / Nvidia system but I'll try to test it sometime in the future :)
Well let me just say I have the 7950X3D paired with RX7900XTX on ddr5 system memory of 32gb using resizeable bar and I must say ALL my game performance is phenomenal! The intent of that build is to blow away any and all future playstations! Yes I put alot of money into it but with all I can do with this amount of power is ridiculous! Although my setup is major OVERKILL but I wanted to blow the competition out the water!
Yeah basically what I saw on my AMD system too ;)
@@TechGuides i mean amazing performance and have no problems smooth powerful gaming performance! What i don't understand is those who game why do they feel the need to buy a 4090, but sleep on that 7900XTX
MW3 in the benchmark with 7900 xtx and 5800x3d I get 10% higher 1% lows with SAM off, 220 vs 200, but 10% lower average, 300 vs 330.
The CPU performance is way better better with it off since i dont have the best cpu
why i have a problem whit i9-13980HX and RTX 4080 whe i use re-bar i have very big fps drops and dont know where can be the problem laptop is rog scar 16
whit rebar on fps drops for cpu to 130fps when re-bar off fps drops are to 230 fps
I personally disabled it on my intel & nvidia systems
I have 4k so i presume rebar off will have less impact btw try amd system without massive cache cpus some games prefers these so much it even overcomes the negative impacts which rebar can have compared to cpus without x3d cache and results may vary also ddr4/ddr5 specifying this in your results also can help what to expect of that specific combination but i have Intel system i mean cpu and gpu and some ssds but even with Arc in one game it does not matter if rebar is on or off it does not care also going from 1440p to 4k 60fps locked gpu usage have the same average gpu usage and that's around 75-80% ...weird 😐
AMD CPU and Nvidia GPU would be the most popular configuration.
Sorry didnt got round to testing that as well. I might do some quick tests but expect results to be similar to Intel & Nvidia
I knew it didn’t do anything. You’re right all tech channels “turn it on you’ll lose huge fps if you don’t”😂😂😂
hey so I enable resizable BAR but it doesnt say SAM is enabled in my AMD software. Any fixes?
Thats odd... There is another way to check if rebar is enabled: www.reddit.com/r/Amd/comments/l5jijg/comment/gkvfpy2/?
check if it says "large memory range" in your GPU resource tab in the device manager. Still, I would probably try to re-install your GPU drivers
To my understanding L3 cache on CPU and GPU are very important for rebar/sam to work properly to boost performance. Your benchmark results are expected. i9 13900k doesn't have L3 cache, rtx 4080 doesn't have L3 cache. This is why I love AMD hardware because they have big L3 caches that is beneficial for gaming.
Not a single resource I found during my research talked about the importance of L3 cache so I'm doubtful
@@TechGuides yeah I know that too. But what I understand: from dram >> L3 (buffer) >> L2 >> L1
And AMD called them infinity cache which has something to do with smart access memory
What about the "Core Isolation" option from Windows defenden in Windows 11? I've heard it's costing people 50 FPS on average if they turn it on. (Memory integrity)
Honestly I dont know about this option. Id be happy to do some research and check if a test would be interesting :)
If i have a 12700k with a 6950xt and play at 4k, what you recommend?
Cant recommend either option because I dont own a 4K screen to run 4K tests
Believe me its measly boost isn't worth the instabilities it may cause in some games.
The list of games is 3 years old?
Fair point (minus MW3 and CS2) but I blame Nvidia for literally not supporting rebar in any new games 😬
@@TechGuides I would have thought it was down to the game engineers to design in the ReBAR.
On or off i see no difference with my 3070ti, i tried config files with warzone and in the bios.
Seems like ReBAR in Warzone is not actually supported by Nvidia. Sorry for the confusion...
you need to make another test in all 4 maps in warzone, you will be surprised.
on big map urzikistan BR/zombies you will get fps increase with rebar OFF and increase with rebar ON on smaller maps, i believe this works bad on big map that needs to load. thats why its so good in mw3 cuz they all tiny map.
Gotcha, I've read from a couple of viewers that the results are quite different on big map. I will likely do some tests on my AMD system (rebar in MW3 doesn't appear to be supported by Nvidia GPUs) and make a short about it 👍
awesome work!
Thanks a lot!
What would be a good settings to play with i have a lot of input lag on warzone? I play 1440p with my 3070ti which is 100% bottleneck. I lowered the vram to 50 with low settings but i still feel a delay. V sync is off.
Hmm not really much of an idea other than: are you in fullscreen and have nvidia reflex on (not in on + boost!)
@@TechGuides yes fullscreen exclusive with reflex ON. Do you know any good optimization tech who could help me setup my pc and bios?
Amd nvidia: rebar is useless.
Intel arc: oke
...
Rip.. 4080 typo
Should have paired the Ryzen 4070 with your RTX 4800.
Haha
@@TechGuides Thanks for the content and info.
my bar is resizeable too.
So is mine 🤣🤣
YOU ALSO NEED A COMPATIBLE CPU
So for pure AMD system, SAM is better left on all the time
Unless you run out of VRAM apparently...
Bit of a nonsense video because AMD/Nvidia architecture value CPU very little. So enabling REBAR has no effect. Same with E Cores +- 5%. So nothing. AMD/Nvidia architecture is mainly standalone single silicon architecture where CPU play a very small role. Almost all of the tasks are for the GPU. This means queuing and waiting and lot of errors when more is demanded.
INTEL in the other hand via REBAR almost double the performance utilizing the CPU to split the tasks. A770 225W and 13th or 14th top INTEL CPU 253W max you see power and that means performance. But the current testing we use for single silicon architecture for AMD/Nvidia you only see half the performance of INTEL. Plus INTEL ARC architecture there is no queuing or waiting. Every frame is perfect. This is why A770 beats 4070ti at 4k. A770 experience to beat it you need +120FPS from 4070ti.
And when we follow this to Battlemage that will have 250-275W and Arrow Lake on Z890 motherboard at 295W extreme we get 570W of performance. 5080 for example only has 400W and you can't count the CPU. Here is the catch Z890 board has PCI 5.0 with direct lane to CPU without restrictions. REBAR on steroids. So if Alchemist was missing a bit of optimal performance from pairing, Battlemage won't have any of that. It will effectively turn your graphics to dual silicon performance. It was already that with Alchemist but this will be a huge leap. Yet don't forget XeSS XMX is as good as DLSS and APO has a promise on supported games to give 10-50% boost.
Smile with thumb up 😊
Nice vídeo!
Thank you!
@@TechGuides
I play Apex with Intel+Nvidia and resbar ON 1440p . Today disconnect resbar and test my game.
Sorry,i'm Spanish. My english... XD
Let me know how it feels! Havent had time to check in Apex but would be interested as well :)
From my experience for competitive games: freesync off, rebar off.
My sons 13400/4060ti gain fps with rebar in some games
Me 12700/3070ti nope 😂
👍
Best channel
Too kind!
👍👍
❤
👍 :)
turkey