hafijur :
There will be a huge bittleneck, you would struggle to get 50% gpu load with the cpu you have. You could lower that bottleneck if you oc your processor to like 3ghz but it could shorten your processor life. Anyway I have an i5 3317u at 2.4ghz and a 640m and that i5 3317u is like equivalent to an oc c2d at 4.4ghz and the 3317u is mostly 100% cpu usage and 99% gpu load so on the limit. 6670 is not a low end card its a decent 720p gaming card, your cpu is very low end though. Your cpu scores like 1300 on 3dmark11 physics score test. My older laptop 2ghz c2d scores higher then that. My new low end ulv i5 3317u scores 3254 and it barely keeps up with the 640m which is similar if not faster then your desktop 6670.
Some scores are not accurate like my 3dmark11 physic score is 3254.
http://cpuboss.com/cpus/Intel-Pentium-E2180-vs-Intel-Core-i5-3317U
Anyway you may get some gaming prformanc if you oc it to like 3ghz.
I can't overclock the cpu, the bios doesn't support overclocking
The cpu does fine even now, though I agree it is ancient, it runs stuff pretty okay.
And I can't get a hd 7750 at all, not a money issue, but compatibility.
PCIE 3.0 of the 7750 is not compatible with my motherboard's 1.1! Only backward compatible with 2.0. The 6670 was the only choice I had. Anything higher won't work, anything lower won't be good ;(
I'll post my 3dmark scores, what other benchmarks should I post?
II don't have the gpu yet, the orders processing.
My resolution is 1280x1024, fine for a 6670 I guess....
Edit -Wait. There is a Frequency and voltage control tab in the bios , but everything is greyed !
(