BAD GTX 760 SLI performance

Alex86axl

Honorable
Sep 29, 2013
2
0
10,510
Hi guys,

I have bought an extra GTX 760 for my rig and noticed that it is actually slower than my actual single GPU. Tested in 3D Mark and a little play off in Crysis 3.

So, here's my rig:

MB: Gigabyte 990FXA-UD3
PSU: Sirtec High Power BR12 750W Bronze
CPU: AMD Phenom II X2 550 BE , stock clocks @ 3,1Ghz (which, by the way, cannot be unlocked)
RAM: 8GB DDR3 Corsair @ 1333 Mhz Dual channel / 2x2GB + 2x2GB
GPU 1: MSI GTX 760 Hawk / 2GB
GPU 2: MSI GTX 760 TF Gaming / 2GB

Onto the benchmarks:

Icestorm / Single GPU / GTX 760 Hawk : 62394
Icestorm / SLI GTX 760 : 55617

Firestrike / Single GPU / GTX 760 Hawk: 4248
Firestrike / SLI GTX 760: 3726

Tried even an OC to the CPU: Stable OC was @3,5Ghz:
Icestorm / SLI GTX 760 : 67002
Firestrike / SLI GTX 760: 5513

Any ideas why these little numbers?

Thank you for your help !