gtx 970 SLI - barely any fps difference in-game

Erion95 · 11 May 2016

Hi,

I recently bought my second evga gtx 970, and turned on sli.
When i run heaven benchmark my fps is almost doubled.
But in-game there's barely any difference.

For example - sleeping dogs.
Disabling sli will give me 56.8 fps on average.
Enabling sli will give me 56.6 fps on average.
Then i check youtube, and people with the same cards run it at 130 fps average.

I've tried multiple drivers (364.51 / 364.62 and 365.10) but they make no difference.
Both the gpu's are around 72 degrees celcius while gaming.
CPU doesn't get above 45c.

Nvidia control panel: https://gyazo.com/067978ae91dc0062eff82ed5bf176dd6

I've already checked for virusses and updated the drivers.

specs:

amd fx-8350 (4.2ghz)
evga gtx 970 (x2)
killer 990fx mobo
8gb ddr3 ram.
win7 64 bit.

RoasterMen · 11 May 2016

SLI has been on for years and yet is still too immature to improve game performance, so you should expect that.

Layback Bear · 11 May 2016

Your motherboard could also be a slow down problem with FPS.

What power supply are you using??

ASRock > A75M-HVS

Expansion / Connectivity Slots- 1 x PCI Express 2.0 x16 slot
- 1 x PCI Express 2.0 x1 slot
- 1 x PCI slot
- Supports AMD Dual Graphics

Just one PCI-E X16 slot.

RoasterMen · 12 May 2016

Layback Bear said:

Your motherboard could also be a slow down problem with FPS.

What power supply are you using??

ASRock > A75M-HVS

Expansion / Connectivity Slots- 1 x PCI Express 2.0 x16 slot
- 1 x PCI Express 2.0 x1 slot
- 1 x PCI slot
- Supports AMD Dual Graphics

Just one PCI-E X16 slot.

He isn't talking about what's in his PC specs. He's talking about what PC specs he stated in his post.

So:

3 PCIe 2.0 x16, 2 PCIe 2.0 x1

I think it's still a problem.

Erion95 · 12 May 2016

Yes, the specs in "my pc specs" are from 3 years ago. I apologize.

My power supply is a 750w be quiet 80+.

I've updated the "my system specs" section to my current hardware.

ThrashZone · 12 May 2016

Hi,
There are many evga sc 970's
Here's just 1 showing a 500w or higher recommended psu
Now you have 2-970's :)
Math would say at least 1000w
EVGA - Product Specs - EVGA GeForce GTX 970 SC GAMING

500 Watt or greater power supply.****
PCI Express, PCI Express 2.0 or PCI Express 3.0 compliant motherboard with one graphics slot.
Windows 10, Windows 8 & 8.1, Windows 7, Windows Vista

Layback Bear · 12 May 2016

Thank you for updating your system specs.

alphaniner · 12 May 2016

ThrashZone said:

Here's just 1 showing a 500w or higher recommended psu
Now you have 2-970's :)
Math would say at least 1000w

It doesn't work that way. The 500W recommendation includes the power consumption of all other components. This calculator recommended 389W for one 970 and 541W for two 970s in SLI. I only entered CPU, RAM, and GPU so those numbers are unreasonably low. But the difference of 152W is what matters most here.

Erion95 · 12 May 2016

ThrashZone said:

Hi,
There are many evga sc 970's
Here's just 1 showing a 500w or higher recommended psu
Now you have 2-970's :)
Math would say at least 1000w
EVGA - Product Specs - EVGA GeForce GTX 970 SC GAMING

500 Watt or greater power supply.****
PCI Express, PCI Express 2.0 or PCI Express 3.0 compliant motherboard with one graphics slot.
Windows 10, Windows 8 & 8.1, Windows 7, Windows Vista

Yeah, but 1 card is only 145 watts. 2 would be 290 watts.
If there wasn't enough power, then wouldn't my computer freeze?

ThrashZone · 12 May 2016

Hi,
Never know until it's under a lot of stress or you start overclocking it further before you might run into power shortages.

Recommended spec's are mostly to cover their asses I'd imagine but the gpu does soak it up not counting everything else
Never heard of your psu (Be quiet 750w 80+) "gold" I guess ?