- Nov 28, 2013
- 4
- 0
- 10,510
Hi guys! I recently installed my 2nd GTX 660ti with 2 SLI Bridges in between them. Once I booted up I selected "Maximize 3D performance" in order to enable SLI.
I then did some Kombustor tests to benchmark but noticed that GPU 1 was being used at load 99% and GPU 2 was being used 0%.
I then ran 3D Mark 11, Ice Storm, Cloud, and Fire Strike. I got 60 fps on the first one but 35 fps on the second one and 10 fps on Fire Strike, I did these test with all the things maxed out. Why am I getting such low performance when I'm running 2 660ti both overclocked?
I then played a couple of graphics intense games like AC4 and Crysis 3 with Afterburner running in the background to see the GPU Usage. I'm getting 50fps with settings maxed out. GPU 2 is spiking like crazy and averaging at about 80% load when GPU 1 maintains a flat line and averages at like 20%. Why is it doing this, I thought SLI was supposed to split the load equally!
Can anyone help me, is this a scaling problem, CPU bottleneck, or anything? I feel like I just wasted $200 when I was expecting double the performance.
Specs and Rigs:
Running everything at 1080p
i7 3770k 3.5 GHz overclocked to 4.2 GHz (41 threads,I think I can push this up a little more to 44)
PSU: 750W Gold Efficiency
GPU 1: MSI GTX 660ti Power Edition Overclocked
GPU 2: MSI GTX 660ti Power Edition
Motherboard: Asus Z87 Sabertooth
I then did some Kombustor tests to benchmark but noticed that GPU 1 was being used at load 99% and GPU 2 was being used 0%.
I then ran 3D Mark 11, Ice Storm, Cloud, and Fire Strike. I got 60 fps on the first one but 35 fps on the second one and 10 fps on Fire Strike, I did these test with all the things maxed out. Why am I getting such low performance when I'm running 2 660ti both overclocked?
I then played a couple of graphics intense games like AC4 and Crysis 3 with Afterburner running in the background to see the GPU Usage. I'm getting 50fps with settings maxed out. GPU 2 is spiking like crazy and averaging at about 80% load when GPU 1 maintains a flat line and averages at like 20%. Why is it doing this, I thought SLI was supposed to split the load equally!
Can anyone help me, is this a scaling problem, CPU bottleneck, or anything? I feel like I just wasted $200 when I was expecting double the performance.
Specs and Rigs:
Running everything at 1080p
i7 3770k 3.5 GHz overclocked to 4.2 GHz (41 threads,I think I can push this up a little more to 44)
PSU: 750W Gold Efficiency
GPU 1: MSI GTX 660ti Power Edition Overclocked
GPU 2: MSI GTX 660ti Power Edition
Motherboard: Asus Z87 Sabertooth
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