7820X worse than Sandy Bridge?

Tergo7

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Jul 21, 2017
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Hello everyone,

I've just finished upgrading my PC, here is how it looked:

Core i5-2500
8GB DDR3-RAM
GTX 970
Asrock Z68 Pro3

and here is how it's looking now:

Core i7-7820X
Noctua NH-D15S
16GB DDR4-RAM Corsair LPX Vengeance (2.667Mhz running at 2.133Mhz)
GTX 970
Gigabyte X299 UD4
be quiet! Straight Power 600W
500GB SSD.

Before I upgraded I ran a quick tests with a few games of mine (GTA 5, BF1, Steep) and noticed now that the 7820X has worse gaming performance than my 2500. For example, in the benchmark sequence of GTA 5 I get with the same settings (copied the cofig file) about 2 or 3 fps less than on my Sandy Bridge CPU. The same goes for Steep: I constantly had over 60 FPS with my 2500, the 7820X only allows 40 to 50 FPS.

The thing is, performance in software like x264 or music produktion or Cinebench is very good. Cinebench score is 1.734 and the video encoding pace of a 4k video is about 20 FPS. When I play video games the temperatures are about 40 to 50 degrees Celsius.
I turned off Windows 10 Game Mode.
I chose energy mode 'High Performance'.
I installed and reinstalled the GPU drivers and chipset drivers.
GPU usage in games is usually 99%, CPU about 30 to 40%.
This is a fresh Windows 10 install.

When I'm booting, the DRAM-, GPU- and CPU-LEDs on my motherboard light up red for a few seconds, but then it boots up either way. The manual says, that if they light up, something is not right. But why is it booting then? The newest BIOS is installed, the CPU is actually mounted by the shop where I bought it and the past showed that they are reliable.

Can you please help me? :)
 
Was your '2500' actually an OC'd 2500K running at 4.5 GHz, per chance?

Your X299 MB should support 2666 mem speeds with that cpu model, that's the first thing to look for in the BIOS....

http://hexus.net/tech/reviews/cpu/107947-intel-core-i7-7820x-14nm-skylake-x/
 

Tergo7

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Jul 21, 2017
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No, it really was a i5 2500, so no OC.
It's running at 2.133, because thats what the ram compatibility list says for my motherboard+that Specific RAM. But would that make such a big difference?
 
There are quite a few X299 board and cpu reviews out now; guess I'd be studying the ones regarding your cpu and mainboard, and looking particularly for any possible 'gotchas' in the BIOS that might be robbing performance...
 

Tergo7

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Jul 21, 2017
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Mhh, I mean, the Performance during Software is fine, it's great actually. Only when I'm gaming it does not hold up against my 2500.
Could this still be BIOS related?
Other people have suggested a GPU bottleneck, but even then the performance difference between old and new CPU would have to show something, right?
 
The base clock of the 7820X is 3.6 GHz/Turbo 4.3 GHz...; to me, I'd also be very pissed if there was a single game where a 4 generations newer i7 clocked 300 MHz faster 6 years later was outframed in *ANY* game...

http://hexus.net/tech/reviews/cpu/107947-intel-core-i7-7820x-14nm-skylake-x/?page=2

Does it appear most are testing this via quad channel mem configurations? (Is yours quad channel, 4 x 4 GB ssticks to maximize memory bandwidth, or a dual channel 2x8 kit?)

 

Tergo7

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Jul 21, 2017
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Mine is dual channel, but yet so was my i5 System.
It's just weird that it's performing so well in software, as if my GPU suddenly had a Problem. Maybe I should try a different PCIe Slot?
 

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