CPU TDP too low, performance suffering

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N

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Commendable
Sep 11, 2016
4
0
1,510
7700k Intel CPU, newly bought and installed. One week of runtime on the system with no stability problems.

z270 Pro4 Asus motherboard. 1080 ftw Hybrid GPU. 8GB single channel ram, which I am going to be upgrading soon. 2TB Seagate HDD

I ran prime95 for 10 minutes. The max temperature was 49C. The temperatures sat between 40-42C at 100% load for several minutes straight. The Wattage was only around 50. It might have spiked up near 60, but not over.

I have just overclocked the cpu to 4.7 through the motherboards automatic overclocking system. It offers 4.6, 4.7, 4.8 & 4.9. However my passmark score is still only 10.5k. I ran 10 tests and took the most recent one, for a similar result of 10493. This is an improvement, but still far from expected values. It seems to be overclocking a worse baseline. Or at least suffering from the same problem.

I have an 850W gold psu: SilverStone Strider Gold 850W ST85F-GS

I am not sure if I have some setting reducing my TDP, or if it is some other problem.

My graphics card is performing normally with a G3D score of 12256

Why is the TDP so low? And what can I do to fix my CPU performance?
 
Solution
M
A single stick of RAM will run in single channel access mode, cutting memory bandwidth in half...

You will have to go thru all BIOS options, looking for anything that might affect core voltage, power limits, clock speed profiles...

It would probably be easiest to remove power from PSU, clear CMOS, set to defaults, and start over, selecting default/auto in 99% of most settings; you can adjust multiplier manually later, and boost core voltage by .05V-.075V if necessary for that last 'feel good' 100 MHz jump and extra .5 frame/sec boost or so...

(THat *should* clear out any possible errant setting that might be limiting/strangling power delivery, or clock speeds...)
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lumineZ

lumineZ

Honorable
Jul 25, 2017
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As mdd1963 already sayd it also comes down to the speed of your ram.
And using the auto overclock function is not ideal at all. Tested it myself on my Maximus hero IX and did a benchmark. Setting it manually it improved my performance and tempratures.
 
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N

New constructor

Commendable
Sep 11, 2016
4
0
1,510
Thank you for the responses. In order: No, I have no delidded or done any customisation regarding installation or settings. That is, beyond the automatic OC to 4.7.

Memory clock is set at 'default 2133' in the bios. I just checked the bios and it all seems normal. However, it is a single 2133 MHz 8GB stick. This could still be the problem.

Thanks for the pointers. At this point, I am looking to get to the right baseline performance. I was mainly just testing if my lack of any oc at all was the problem, given this is a 'k' card. I'll definitely do something more manual once I have a proper baseline to work with.

Overall, it seems like the wattage is the problem. It is particularly low, and the other settings seem fine. Since the temperatures are also extremely low, it seems more like overall powerdraw is the problem somehow. I will provide you with any further information or run checks you recommend.

I just ran cinebench. CPU got 1001 cb. Gpu got 144.3 fps. I ran CPU cinebench a second time and got 998.

It is worth noting that the wattage was around 79-80 for the cinebench testing. However this is an overclocked cpu below the baseline wattage while at 100% load. Temps still about 61-63C.
 
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M

mdd1963

Titan
Jan 14, 2006
16,619
1,736
81,240
A single stick of RAM will run in single channel access mode, cutting memory bandwidth in half...

You will have to go thru all BIOS options, looking for anything that might affect core voltage, power limits, clock speed profiles...

It would probably be easiest to remove power from PSU, clear CMOS, set to defaults, and start over, selecting default/auto in 99% of most settings; you can adjust multiplier manually later, and boost core voltage by .05V-.075V if necessary for that last 'feel good' 100 MHz jump and extra .5 frame/sec boost or so...

(THat *should* clear out any possible errant setting that might be limiting/strangling power delivery, or clock speeds...)
 
Upvote 0 Downvote
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