So... after months of wild speculating and guessing we finally have some first official numbers regarding the new mobile GPUs of Nvidia.
Here the specifications listed on the official Nvidia site:
GTX 660M
GTX 670M
GTX 675M
Graphics Clock
835MHz
598MHz
620MHz
CUDA Cores
384
336
384
Texture Fill Rate (billion/sec)
30.4
33.5
39.7
Memory Interface
DDR3/GDDR5
DDR3/GDDR5
DDR3/GDDR5
Memory Clock
2000MHz
1500MHz
1500MHz
Memory Interface Width
128-bit
192-bit
256-bit
Memory Bandwidth (GB/sec)
64
72
96
Max SLI Configuration
2-Way
2-Way
2-Way
610M
GT 620M
GT 630M
GT 635M
GT 640M LE
GT 640M
GT 650M
Graphics Clock
900MHz
625MHz
800MHz
675MHz
500MHz
625MHz
850MHz
CUDA Cores
48
96
96
144
384
384
384
Texture Fill Rate (billion/sec)
7.2
10
12.8
16.2
16
20
27.2
Memory Interface
DDR3
DDR3
DDR3/GDDR5
DDR3
DDR3/GDDR5
DDR3/GDDR5
DDR3/GDDR5
Memory Interface Width
64-bit
128-bit
128-bit
192-bit
128-bit
128-bit
128-bit
Memory Bandwidth (GB/sec)
14.4
28.8
32
43.2
28.8
64
64
There are seven 600m series GPUs which can be considered low- to middle-end and three which are high-end.No word on the Nvidia site about which manufacturing process is being used for these chips, but the statement telling one should assume that they really shifted to 28nm only, but I want to see this confirmed before I really believe this to be true.Anyway, looking at the specs of Nvidias new mobile flagship, the GTX 675m I can't help but to think that they just shrinked the fermi architecture... the specs and clocks are identical to the 580m. They might also have messed up the numbers they put on the site, it just seems unlikely that all GPUs from the 640m up to the 675m all have the same core count (except for the 670m).Well, I guess we will see more information in the near future, when the first systems with these GPUs are getting released. I'm definitely curious about how they perform and can't wait to see some benchmarks. Also the overclocking capability is going to be a very interesting point.
So far there's no word about new features for this GPU series, so it's unclear whether the "clock boost" technology which can be found in the desktop GTX 680 will also make its way to the mobile GPUs.
Here some performance graphs, also taken from Nvidias website:[ATTACH=CONFIG]3707[/ATTACH] [ATTACH=CONFIG]3708[/ATTACH]
So far I'm really not that impressed, though we have yet to see the real world performance, and tbh I'm really curious about the AMD 7000m series :)