Causes and Solutions for a slow PC

[majkool]

Problem:
2D score are really low even on high-end pc
Solution:
Disable G-SYNC in monitor not just nVidia control panel

I went from main score ~2300 to ~7000!

Deeper discussion in this post.

[David (PassMark)]

And other one

Problem:
RAM got slower in June 2021 on Intel CPUs (in some circumstances).

Solution / Cause:
Intel implemented some (more) CPU microcode changes to work around (more) security bugs.
Details are here
https://travisdowns.github.io/blog/2...-zero-opt.html
Impact is probably pretty small in real life software, but if you are doing regular benchmarks you might notice the machine getting slightly slower.

[David (PassMark)]

An interesting new case for slower than expected RAM speeds.


Problem
I use faster RAM, but performance is worse than with slow RAM on a Ryzen CPU.

Solution
The CPU has a power budget and with high speed RAM the power budget is hit, resulting in throttling of the CPU.
Details are in this video
https://www.youtube.com/watch?v=6-2mXS3xEok
In our opinion this is kind of poor design. What is point of claiming to support high speed RAM if it might slow the machine down overall? Makes getting the optimal BIOS settings overly complex.

[Simon (PassMark)]

I was hoping to see specific suggestions for CPU score being low. I have just built new PC around 11900k and my score is a very disappointing 19256 against average of around 26000.
I downloaded a baseline to compare but could not see the direct individual comparisons for integer math, prime numbers, CPU single threaded of the baseline.
Is this possible to do?

Could you try checking on task manager >Performance > CPU when you run the tests what the speed of your CPU is while running PerformanceTest? I had I look at the baselines for that CPU and if your CPU stays at 3.5Ghz the score is around what you get. If the CPU is reaching 5+Ghz, the scores get to around the 26000 average.

If your speed is locked to 3.5Ghz, maybe check your BIOS and make sure that you have not disabled Turbo boost?

[Maax555]

I was hoping to see specific suggestions for CPU score being low. I have just built new PC around 11900k and my score is a very disappointing 19256 against average of around 26000.
I downloaded a baseline to compare but could not see the direct individual comparisons for integer math, prime numbers, CPU single threaded of the baseline.
Is this possible to do?

[David (PassMark)]

2D was faster in mid 2019, but is slower now.

Problem:
Microsoft have made patches to the O/S to work around security issues. These patches were in September 10, 2019—KB4512578 (OS Build 17763.737)

Like the Spectre & Metldown changes above these changes have a performance impact on tests that make a lot of API function calls into the Kernel. (e.g. Disk and 2D). Particularly the advanced vectors and windows interface tests. Performance was reduced by up to a further 30% (after being cut in half earlier).

Solution:
Don't install KB4512578. Not much of a solution really. Microsoft are aware of the problem, but don't care greatly about 2D performance.

[David (PassMark)]

2D was fast in the year 2018 and early 2019. But is slower now.

Problem:
Microsoft, Intel and AMD have made patches to the O/S and CPU microcode to fix the Spectre & Meltdown class of security issues
https://en.wikipedia.org/wiki/Spectr...vulnerability)

These changes have a performance impact on tests that make a lot of API function calls into the Kernel. (e.g. Disk and 2D). Particularly the advanced vectors and windows interface tests. Performance can be roughly halved.

Solution (Unverified):
If you get the inspectre tool from Gibson Research it can report on what Spectre & Metldown patches have been applied and disable them. This will then restore the lost performance (but also reopen the security vulnerability). In our opinion, the security issues aren't critical for a home user (one user on a single machine). They are more critical in a server environment with multiple users however. So try disabling them and see if it restores the lost performance.

[GTX 1050 Ti]

Depends on your goal. Different games will have different behaviour in any case.

Hi, i accidently overclocked my gpu by 600 mhz for a week, my bpu seems a bit slower now. is there a way i can fix this or is it broken

[David (PassMark)]

do you reccoment i turn them down or off just for the tests, and thne turn them back up for gaming ?

Depends on your goal. Different games will have different behaviour in any case.

[GTX 1050 Ti]

So do you reccoment i turn them down or off just for the tests, and thne turn them back up for gaming ?

[David (PassMark)]

How do i check this?

Most video card device drivers come with a control panel to adjust these settings.

[GTX 1050 Ti]

Problem:
3D graphics results are lower than expected. Especially the "Medium 3D" test (in V7 of PerformanceTest).
Solution:
If the settings in the video card's device driver are manually set to maximum quality and maximum anti-aliasing, then this can significantly decrease the frame rate compared the leaving the setting on the default values.

How do i check this?

[Farmfield]

Problem:
PC is slow
Solution:
Upgrade your hardware. If you PC is more than 5 years old, it is never going to run Vista or XP very well. Consider a hardware upgrade.

I would propose this statement from the first post is no longer accurate in regard to the OS's mentioned.

[David (PassMark)]

Problem:
3D graphics results don't get above 90 frames / sec for the DirectX12 test
Solution:
If the frame rate for the 3D test always sits at approximately 90 frames / sec then your frame rate might be limited to your monitors refresh rate. There are a few possibilities for this.
1) Some monitors have "FreeSync" or "G-Sync" technology. Which limits the frame rate to 90fps (or some other fixed value). You can try turning it off for higher fps.
2) Some monitor are limited to 60hz, 90hz or 120hz and have the video card device driver settings for "vertical synchronisation" or "Refresh rate" settings turned on. You can try turning them off.
3) We have had one example of a monitor limiting FPS to 90, even when in theory FreeSync and vertical synchronisation were not enabled. We think this is a bug in the monitor / device driver.

[David (PassMark)]

Slow 3D performance in Directx 11 test

Problem:
Frame rates are low on nVidia video cards in DirectX 11.

Solution:
nVidia (in 2016) is shipping various different software for screen recording (Shadowplay) and screen sharing.
These software was observed to approximately half the frame rate of the 3D benchmark. DirectX9 and 10 are also effected as well, but not as badly as DirectX11. Strangely this is happening even when you aren't recording. So it might be a bug in nVidia's software. Turning off "sharing" and Shadow play fixes the problem. Shadow play was also observed to cause crashes and hangups on some machines.

Update: Some people have had to unistall the entire "GeForce Experience" software to restore the performance of DirectX 11.

Additional information can be found in this post.