AMD Ryzen 9 7950X3D CPU Review & Benchmarks: 700 Gaming Flagship
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Date: 2023-02-27
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Comments and reviews: 13
Adam
Hi Steve. Amazing video. I am one of the people who would be willing to fork out 700 bucks for this CPU depending on the performance and results of course. However I do have some concerns about this CPU that I hope you can elaborate on or test in a future video.
1) The 7000 series CPU's are known to be kind of fidgety with the new DDR5 rams. Concerning this CPU how much does Ram speed relate to the overall performance of this CPU? How many GB's of ram can the CPU handle? On the official AMD website it is stated that the recommended RAM speed is 5200 MT/s (2x2R or 2x1R), although there are much faster ram's on the market and even here you tested with a 6000 MT/s ram. So what would be the fastest RAM and configuration that the 7950X3D could handle without crashing, and what would be the best cost/performance setup?
2) In the video you mentioned that the faster cores are disabled in gaming in order to get stable and better performance. So would we be able to put on the best performance battery settings if we manually configure which CPU cores would certain games/applications use with a program such as Processor Lasso? Wouldn't this also mean we could in theory disable the left CCD and use the right one with games that do not benefit from the V-Cache? Essentially getting better performance by deciding which CCD should certain game use?
If you ever see this reply and offered and answer or even better, make a video in the future about these topics, I would really appreciate it. Love your videos and thank you for the hard work.
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Hi Steve. Amazing video. I am one of the people who would be willing to fork out 700 bucks for this CPU depending on the performance and results of course. However I do have some concerns about this CPU that I hope you can elaborate on or test in a future video.
1) The 7000 series CPU's are known to be kind of fidgety with the new DDR5 rams. Concerning this CPU how much does Ram speed relate to the overall performance of this CPU? How many GB's of ram can the CPU handle? On the official AMD website it is stated that the recommended RAM speed is 5200 MT/s (2x2R or 2x1R), although there are much faster ram's on the market and even here you tested with a 6000 MT/s ram. So what would be the fastest RAM and configuration that the 7950X3D could handle without crashing, and what would be the best cost/performance setup?
2) In the video you mentioned that the faster cores are disabled in gaming in order to get stable and better performance. So would we be able to put on the best performance battery settings if we manually configure which CPU cores would certain games/applications use with a program such as Processor Lasso? Wouldn't this also mean we could in theory disable the left CCD and use the right one with games that do not benefit from the V-Cache? Essentially getting better performance by deciding which CCD should certain game use?
If you ever see this reply and offered and answer or even better, make a video in the future about these topics, I would really appreciate it. Love your videos and thank you for the hard work.
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TECHNOSLAV
OK so instead of turning off the second CCD, you could just do CPU affinity trick using task manager to force a game to limit the game to the better CCD.
I can't recall which task manager replacement software lets you quickly select all running .exe's with ctrl+a and bulk assign their affinity to the non-gaming cores. Such replacement app will also remember process to core affinity, so you only need to do that once for all background processes, and once per game (when it matters).
Basically it's manual thread director but you have to set the rules manually, which is rather simple.
Ctrl+A -> affinity 16 to 31 + persist
Click game -> affinity 0 to 15 + persist
P.S.: Process lasso lets you ctrl+a the entire list of running processes, which is rather handly. I remember gaining some 5% FPS using it on Ryzen 1700 which had 2 CCX, forcing all background threads to the slower CCD, reducing concurrency with the game's threads.
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OK so instead of turning off the second CCD, you could just do CPU affinity trick using task manager to force a game to limit the game to the better CCD.
I can't recall which task manager replacement software lets you quickly select all running .exe's with ctrl+a and bulk assign their affinity to the non-gaming cores. Such replacement app will also remember process to core affinity, so you only need to do that once for all background processes, and once per game (when it matters).
Basically it's manual thread director but you have to set the rules manually, which is rather simple.
Ctrl+A -> affinity 16 to 31 + persist
Click game -> affinity 0 to 15 + persist
P.S.: Process lasso lets you ctrl+a the entire list of running processes, which is rather handly. I remember gaining some 5% FPS using it on Ryzen 1700 which had 2 CCX, forcing all background threads to the slower CCD, reducing concurrency with the game's threads.
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Rados aw
26:50 guys, what about assigning cores to apps ?
they already have a list of them, literally they could just assign certain apps to run only on vcache while others could be moved explicitly to faster cores.
it would make more sense for me as then you literally have 8 core's with vcache just for your game, and windows and background runs elsewhere.
it would have 2 big advantages, of windows not taking both cpu and cache space that a game can use, and I suspect it would yield a lot for certain scenarios.
I know it would take another week of development, (as it's same mechanism just different piece of windows commands) but it's seems a waste to run your games in 7800x3d mode when you have 7950x3d.....
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26:50 guys, what about assigning cores to apps ?
they already have a list of them, literally they could just assign certain apps to run only on vcache while others could be moved explicitly to faster cores.
it would make more sense for me as then you literally have 8 core's with vcache just for your game, and windows and background runs elsewhere.
it would have 2 big advantages, of windows not taking both cpu and cache space that a game can use, and I suspect it would yield a lot for certain scenarios.
I know it would take another week of development, (as it's same mechanism just different piece of windows commands) but it's seems a waste to run your games in 7800x3d mode when you have 7950x3d.....
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Lawyer
I would like to see ray tracing cpu benchmarks, as weird as it sounds , with the new 4000 seires, its not completely a gpu bound scenario , many games are coming , where even at 4k ultra settings ray tracing enabled, the moment you activate dlss , bam cpu bottleneck.
RT is heeeeavy on the cpu!!
so 1080p RT enabled cpu benchmarks would be really cool!!!
I mean get it to 720p if you really need it, but RT causes cpu bottlenck , im sure of it, it happens to me with a 4090 , 5800x3d combo.
my personal, experience seems to show that 3d v cache helps with RT cpu bottleneck , but i havent documented it
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I would like to see ray tracing cpu benchmarks, as weird as it sounds , with the new 4000 seires, its not completely a gpu bound scenario , many games are coming , where even at 4k ultra settings ray tracing enabled, the moment you activate dlss , bam cpu bottleneck.
RT is heeeeavy on the cpu!!
so 1080p RT enabled cpu benchmarks would be really cool!!!
I mean get it to 720p if you really need it, but RT causes cpu bottlenck , im sure of it, it happens to me with a 4090 , 5800x3d combo.
my personal, experience seems to show that 3d v cache helps with RT cpu bottleneck , but i havent documented it
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Jon
I wish there was more control directly within Windows for process scheduling/core parking behavior. I have a 5950x and there are some games where I have to manually set the CPU affinity in Task Manager to limit it to just one CCD (and sometimes to every other logical core to avoid SMT issues). It would be nice to be able to set core scheduling profiles per-application, similar to the way the Windows compatibility settings work. That way I wouldn't have to manually configure the threads each time (or swap Ryzen Master profiles and reboot) to swap between production workloads and gaming.
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I wish there was more control directly within Windows for process scheduling/core parking behavior. I have a 5950x and there are some games where I have to manually set the CPU affinity in Task Manager to limit it to just one CCD (and sometimes to every other logical core to avoid SMT issues). It would be nice to be able to set core scheduling profiles per-application, similar to the way the Windows compatibility settings work. That way I wouldn't have to manually configure the threads each time (or swap Ryzen Master profiles and reboot) to swap between production workloads and gaming.
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denvera1g1
Imagine a SteamOS thread scheduler(because you're never getting it from WinTel), this advanced thread scheduler could put cache sensitive threads on the Vcache chip, and frequency sensitive threads on the non cache chip, and dynamically monitor which is better to throw each thread on.
For instance, if there are alot of cache misses on thread A, and none on thread B, move thread A onto cache, and B onto the non cache chip, but if there is alot of communication between the two threads, find out which chip is better to throw both of them on through trial and error
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Imagine a SteamOS thread scheduler(because you're never getting it from WinTel), this advanced thread scheduler could put cache sensitive threads on the Vcache chip, and frequency sensitive threads on the non cache chip, and dynamically monitor which is better to throw each thread on.
For instance, if there are alot of cache misses on thread A, and none on thread B, move thread A onto cache, and B onto the non cache chip, but if there is alot of communication between the two threads, find out which chip is better to throw both of them on through trial and error
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JohnSheppard92
I would be really interested to see what would happen if AMD could slap a single 3D Cache of 256MiB ontop of both CCDs, which is connected to both of them. Both CCDs would run of the massive L3 Cache and could share it between each other. So there wouldn't be a bottleneck through the Infinity Fabric when a Core on one CCD want's to access the L3 on another CCD, it would all be shared. This would also remove the necessity to park cores, because all would operate in the same manner
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I would be really interested to see what would happen if AMD could slap a single 3D Cache of 256MiB ontop of both CCDs, which is connected to both of them. Both CCDs would run of the massive L3 Cache and could share it between each other. So there wouldn't be a bottleneck through the Infinity Fabric when a Core on one CCD want's to access the L3 on another CCD, it would all be shared. This would also remove the necessity to park cores, because all would operate in the same manner
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Ovi
I'm not buying highest end anymore.
I'm waiting for the 7800X and also for RTX 4080 or 4090 to come down in price. They are ridiculous right now.
I'll first update from my 5800X with 3200MHz CL14 Samsung B.Die RAM to AM5 and 7800X 3D first, and keep my RTX 3090 and OC it on watercooling.
The CPU coming in April can't be overpriced either, or I'll just get a 5900X and OC the crap out of it on water too, then hold out.
This has really worked out for me in the past.
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I'm not buying highest end anymore.
I'm waiting for the 7800X and also for RTX 4080 or 4090 to come down in price. They are ridiculous right now.
I'll first update from my 5800X with 3200MHz CL14 Samsung B.Die RAM to AM5 and 7800X 3D first, and keep my RTX 3090 and OC it on watercooling.
The CPU coming in April can't be overpriced either, or I'll just get a 5900X and OC the crap out of it on water too, then hold out.
This has really worked out for me in the past.
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Noah
Gotta say, considering how impressive the v-cache tech results are, I'm also impressed by Intel's offerings. They got their act together, and designed a great chip. Both perform well, which bodes well for consumers. However, I think that AMD has higher profit margins in general, so they have the ability to offer their stuff at competitive prices longer. Anyway, good review
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Gotta say, considering how impressive the v-cache tech results are, I'm also impressed by Intel's offerings. They got their act together, and designed a great chip. Both perform well, which bodes well for consumers. However, I think that AMD has higher profit margins in general, so they have the ability to offer their stuff at competitive prices longer. Anyway, good review
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Mike
You guys should add spider man remastered/miles morales to the testing mix. Very cpu intensive games, particularly with ray tracing turned on. They seem to become throttled with memory bandwidth because ddr5 has big performance gains. Would be interesting to see if the 3d chips help with the bandwidth. Cyberpunk rt can be the same way
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You guys should add spider man remastered/miles morales to the testing mix. Very cpu intensive games, particularly with ray tracing turned on. They seem to become throttled with memory bandwidth because ddr5 has big performance gains. Would be interesting to see if the 3d chips help with the bandwidth. Cyberpunk rt can be the same way
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boastyy
Think I will be holding out until April for the 7800x3d. First upgrade in 7 years, going from 4790k and 980ti lol. Thinking about the Gigabyte b650 elite ax, 7800x3d and G.Skill Flare X5 32GB 6000MHz CL32, hope its a good choice or are there better alternatives for the price I should look at, primarily for gaming? Thanks guys.
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Think I will be holding out until April for the 7800x3d. First upgrade in 7 years, going from 4790k and 980ti lol. Thinking about the Gigabyte b650 elite ax, 7800x3d and G.Skill Flare X5 32GB 6000MHz CL32, hope its a good choice or are there better alternatives for the price I should look at, primarily for gaming? Thanks guys.
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Steven
Oof, AMD's understanding of the definition of the word efficiency really comes in to question, when they keep moving their own understandings from what they measured Zen 4 over 3. The 7950X seems to be blasted with power by default. These results seem to be pretty matching, and measured over the best they could make!
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Oof, AMD's understanding of the definition of the word efficiency really comes in to question, when they keep moving their own understandings from what they measured Zen 4 over 3. The 7950X seems to be blasted with power by default. These results seem to be pretty matching, and measured over the best they could make!
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Lakados
Any chance for a test with the 7950x3d where you have the games going but also Discord and a half dozen browser tabs?
I would be very interested in knowing if those extra cores stay parked or if they take on that load.
I love the pure performance benchmarks but a couple of use case scenarios are good too.
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Any chance for a test with the 7950x3d where you have the games going but also Discord and a half dozen browser tabs?
I would be very interested in knowing if those extra cores stay parked or if they take on that load.
I love the pure performance benchmarks but a couple of use case scenarios are good too.
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