[SOLVED] GPU bottleneck

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toniplavna

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Dec 4, 2016
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Hello guys,

I upgraded my pc , got i7 3770k, 16gb of ram ddr3 1600mhz hyper fury, ssd adata 256gb and gigabyte z77mx d3h motherboard. I have rasurbo PSU 550w, two 12 rails one is 19A second 18A. PSU was used before on old rig and its fine.

According to that calculation website I have total bottleneck by my gpu-100%. Old q9300 was working good with my msi 6850 oc. I get higher fps but my gpu obviously limiting my PC.

What I can afford right now is only second hand cards in some in 50-55$ range. Here, for that money, I have r9 270 or gtx 660 , gtx 760 at max. According to that website it will still be a bottleneck but will be better.

Any advice ?
 
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PC Tailor
toniplavna said:
Well I saw people with same rig but with 1080ti running crazy fps
Click to expand...
Well yes they will, it's a 1080Ti.
As i asked previously, is your GPu the HD 6580? In which case yes, it's an old and outdated GPU. So you're looking for recommendations to upgrade it?

Happy to do so shortly, just keep in mind this:

toniplavna said:
About PSU, why you said it is bad quality???Have 37A on 12v rail I think its totally fine for a 77w tdp cpu and tdp 127w gpu that I have right now.
Click to expand...
Quality is not the same as power. The Rasurbo 550W from my understanding does not have good ripple suppression , really poor performance in cross loads, poor regulation on practically all rails and a really small warranty, which is only really present in poor quality...
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toniplavna said:
According to that calculation website I have total bottleneck by my gpu-100%
Click to expand...
Ignore these sites like the plague! They're is no such thing as a "one component bottleneck". Bottlenecks are completely application dependant, and these sites can't distinguish that (from all the ones I've seen).

Firstly regardless as to whether you've used the PSu before, it is bad quality, so IMO i would give it a real hard look. Otherwise you risk instability and damage to the rest of your system.

Is it the HD 6580 GPU? It could well be limiting, just don't trust those bottleneck sites.
 
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PC Tailor said:
Ignore these sites like the plague! They're is no such thing as a "one component bottleneck". Bottlenecks are completely application dependant, and these sites can't distinguish that (from all the ones I've seen).

Firstly regardless as to whether you've used the PSu before, it is bad quality, so IMO i would give it a real hard look. Otherwise you risk instability and damage to the rest of your system.

Is it the HD 6580 GPU? It could well be limiting, just don't trust those bottleneck sites.
Click to expand...

Well I saw people with same rig but with 1080ti running crazy fps so I guess this gpu is hard bottleneck.

About PSU, why you said it is bad quality???Have 37A on 12v rail I think its totally fine for a 77w tdp cpu and tdp 127w gpu that I have right now.
 
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toniplavna said:
Well I saw people with same rig but with 1080ti running crazy fps
Click to expand...
Well yes they will, it's a 1080Ti.
As i asked previously, is your GPu the HD 6580? In which case yes, it's an old and outdated GPU. So you're looking for recommendations to upgrade it?

Happy to do so shortly, just keep in mind this:

toniplavna said:
About PSU, why you said it is bad quality???Have 37A on 12v rail I think its totally fine for a 77w tdp cpu and tdp 127w gpu that I have right now.
Click to expand...
Quality is not the same as power. The Rasurbo 550W from my understanding does not have good ripple suppression , really poor performance in cross loads, poor regulation on practically all rails and a really small warranty, which is only really present in poor quality PSUs.

Remember the amps and wattage on a rail has little relevance to the quality of the unit. and poor quality can equal:
  • Instability to your rig
  • Damage to your other components (happens all the time)
  • Excess heat
  • Worst cases - fire (and this happens quite a lot).
And this is what poor quality PSUs can do (see point 1 here): https://forums.tomshardware.com/thr...when-selecting-parts-for-a-custom-pc.3510178/
 
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Solution
PC Tailor said:
But none the less you will still want to upgrade the PSU sooner rather than later, as the power draw won't make much of a difference.

It's a pain I know, but last we'd want you to do is pay for new parts for a PSU to wipe them out.
Click to expand...

How I can know its the PSU?

My last rig was Quad 9300 OC with the same graphic card. That quad has tdp of 95w. And it was overclocked so probably 100w or more.

Now I switched to i7 3770k which is 75w and I dont want to OC yet.

On the old motherboard I used 2 sticks of RAM, which is ddr2 and its 1.8v compared to this one which is ddr3 and use 1.5V. DDR3 use less power.

I had old rig for a 3-4 years, played all kind of games and never expirienced any problems with freezes, high temps, termal throttle, BSOD etc. I used premiere pro rendering a lot also, even for a 8 hours sometimes. No problem.

So in conclusion:
Radeon hd 6850 draw 127W-stock one. My MSI 6850 OC I think around 135w
R9 270 draw around 150w (see here https://forums.evga.com/How-Much-Power-Usage-a-AMD-R9-270-Non-X-really-Pulls-m2106947.aspx )

Also it demands 28A from 12 rails, mine has 37A.

Thats 15w more between my current gpu and a R9 270. But on the other hand as I sad tdp of cpu is now less and also ddr3 ram use less power. So all in all , its almost the same thing.
-

I know that we all want the best quality PSU and other components but really I can't stretch that much and invest in PSU and then buy a better GPU.
If I buy a r9, I will test it out right away with this PSU and I ll come back here and write what happened. If I need new PSU, well I ll put r9 aside and wait when I buy it.
 
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toniplavna said:
How I can know its the PSU?
Click to expand...
There may be some misunderstanding so apologies, the PSU is NOT your bottleneck, but your PSU is a risk in your system overall. The power requirement is IRRELEVANT unfortunately. Doesn't matter how much a GPU draws, a PSU can still blow.

We just want to make sure you don't buy components for a PSU to take them out. It's unfortunately one of the most common encounters we have on the forums. Where people have upgraded their system, and then their PSU blows and takes them out.



toniplavna said:
If I buy a r9, I will test it out right away with this PSU and I ll come back here and write what happened. If I need new PSU, well I ll put r9 aside and wait when I buy it.
Click to expand...
Again, this is a bit of misunderstanding i think -will it work (assuming you have the correct power connections) yes it will
Will it be safe however? Probably not.

We don't want you to have the best, we just want to advise on a PSU that won't risk your system being damaged or unstable over time :)

I've worked with PSUs that have worked perfectly for 2 years, then out of nowhere blown and took out other components. It doesn't always happen, but it happens a lot, and we just want to make sure you're aware of the risks :)
 
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"I've worked with PSUs that have worked perfectly for 2 years, then out of nowhere blown and took out other components. It doesn't always happen, but it happens a lot, and we just want to make sure you're aware of the risks :) "

I have very different experience for example :) Im with the PCs since 2000, 4th grade elementary school. I have used many shi..ier PSUs than this on my systems. I have never had a bad PSU in 19 years :)
Only one that failed was from my sister, it was some very bad chinese one. And it didn't damage anything , just failed to power the PC.

Dunno I guess Im lucky :)
 
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toniplavna said:
How accurate are the psu calculation sites? By the outervision my calculations are:

Recommended UPS rating:700 VA
Recommended PSU Wattage:379 W

Amperage (combined)​
​
+3.3V​
+5V​
+12V​
9.3 A​
11.5 A​
20.0 A​
89 W​
240 W​
Click to expand...
They're not really that accurate frankly but they're some degree of a start. Some would argue you're better using a random number calculator.

What actual system are you putting into the calculator?
 
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PC Tailor said:
They're not really that accurate frankly but they're some degree of a start. Some would argue you're better using a random number calculator.

What actual system are you putting into the calculator?
Click to expand...

Desktop motherboard- gigabyte z77mx d3h
Processor: i7 3770k no OC 90% tdp
Ram: 2x8gb ddr3
Storage: 1xssd 1xhdd sata
GPU: HD6850 (increased mhz clocks cuz mine is MSI model)
1 Monitor led 22inch
1 mouse
1 keyboard
 
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