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RAM Speed effect on Ryzen 3700X

Areola Grande

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So I've been playing around with RAM speeds to see what effect they have on performance on my 3700X. This is all at stock frequencies on the CPU and I didn't adjust timings or voltages for the RAM, just the speed on FCLK where necessary.

MSI X570 A-Pro
Ryzen 7 3700x with Wraith Prism cooler
16GB Corsair Vengeance RGB Pro
GTX 1070
Latest drivers
Windows 10 2004 (19041.630)
HP m.2 NVME
MSI Dragon Center set to Extreme performance
All fans on maximum to prevent temps being an issue. (3 x 120mm front intakes, 1 x 120mm rear exhaust, 1 x 120mm top exhaust).
I left the system as it is when it boots, to get real-world data as this is how I use the PC daily.


CINEBENCH R20 MULTI
24002666320034003466
40454041405440874084


UNIGINE VALLEY
24002666320034003466
39243946393239393938


7-ZIP BENCHMARK - COMPRESSION
24002666320034003466
58344621146313463765FAILED


7-ZIP BENCHMARK - DE-COMPRESSION
24002666320034003466
89535884849174992293FAILED


PASSMARK - CPU MARK
24002666320034003466
2274823110231572311423228


PASSMARK - MEMORY MARK
24002666320034003466
27832955321933123365


CS:GO
24002666320034003466
347.44352.65365.81373.16374.62



As you can see, there are a few odd results I did retest the outliers and the results were repeated, so not sure what's causing that, but there you go.
 
Those Cinebench R20 number dont look right. My 3700x at stock gets 4800+ points with DRR4 3000mhz 14-15-15-15-54
 
So I've been playing around with RAM speeds to see what effect they have on performance on my 3700X.


As you can see, there are a few odd results I did retest the outliers and the results were repeated, so not sure what's causing that, but there you go.

The outliers are literally margin of error within the benchmark. It's also very difficult to perform a truly accurate series of tests because of the variables (such as heat).

I really wouldn't go around saying 2666mhz RAM is the best because of one example of when it scored better - no one wants their RAM to run at that speed.
 

 
Appreciate your efforts dude! 3400MHz is clearly the sweet spot for your machine.
I've been tempted to do a similar set of tests on my 3600 rig which has 3600 memory.
 
3600 CL14 is all you need.

I played around from 3600c14 to 4000c16 in my Intel rig, I think this is definitely the sweet spot for 90% of cases! Voltages can be conservative, it's easy to get stable. Together with reasonable tight secondary timings, this can perform really well!
 
I played around from 3600c14 to 4000c16 in my Intel rig, I think this is definitely the sweet spot for 90% of cases! Voltages can be conservative, it's easy to get stable. Together with reasonable tight secondary timings, this can perform really well!

Subject to correction, as far as I remember faster ram doesn't doesn't have a 1:1 scale to intel cpu impact like amd cpus as they don't use something similar to infinity fabric in amd cpus. Still has an effect, but not as sensitive.
 
Subject to correction, as far as I remember faster ram doesn't doesn't have a 1:1 scale to intel cpu impact like amd cpus as they don't use something similar to infinity fabric in amd cpus. Still has an effect, but not as sensitive.

I did not say otherwise 😊 What I meant was going over 3600 while dropping timings did not prove to be worth the compromises, even if it were easier for the AMD crew to do so.
 
I've since replaced my stock Wraith prism with a Lian-Li Galahad 240mm AIO, so it might be worth revisiting and seeing if there's some headroom on the CPU now.

Also, if someone smart wants to help me with RAM timings, that would be a fun test too.
 
I'm running the 3200G, being an APU it obviously needs good RAM. I cheaped out and got 2400 CL17... couple months later switched to 3200 CL16 and I can notice the difference.
 
@Mike what's the chances that the AMD Wraith Prism which you replaced is up for grabs?:D....
 

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