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Gaming Performance Comparison
In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660M are very slightly better than the Nvidia GeForce GT 750M.
The GeForce GT 750M has a 132 MHz higher core clock speed and the same number of Texture Mapping Units as the GeForce GTX 660M. This results in the GeForce GT 750M providing 4.2 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.
The GeForce GT 750M has a 132 MHz higher core clock speed than the GeForce GTX 660M and the same number of Render Output Units. This results in the GeForce GT 750M providing 2.1 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.
The GeForce GT 750M was released over a year more recently than the GeForce GTX 660M, and so the GeForce GT 750M is likely to have better driver support, meaning it will be more optimized for running the latest games.
The GeForce GT 750M has 2048 MB more video memory than the GeForce GTX 660M, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the GeForce GTX 660M has superior memory performance.
The GeForce GTX 660M has 32 GB/sec greater memory bandwidth than the GeForce GT 750M, which means that the memory performance of the GeForce GTX 660M is noticeably better than the GeForce GT 750M.
Both the GeForce GT 750M and the GeForce GTX 660M have 384 Shader Processing Units. Having the same number of SPUs and using the same architecture means that the performance they offer can be compared by looking at the memory bandwidth, Texture and Pixel Rates. In this case, the GeForce GT 750M has 4.2 GTexel/s better Texture Fill Rate and 2.1 GPixel/s better Pixel Fill Rate, but the GeForce GTX 660M has 32 GB/sec greater memory bandwidth. Overall, the GeForce GTX 660M has slightly better performance.
The GeForce GT 750M requires 50 Watts to run and the GeForce GTX 660M requires 50 Watts. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.
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|Max Power||50 Watts||vs||50 Watts|
|Recommended RAM||8 GB||vs||6 GB|
|Recommended Screen Size||1366x768||1600x900|
|Mini Review||GeForce GT 750M is a fast-middle-class GFX, based on the 2012, 28nm, Kepler architecture. |
It's Based on the Kepler GK107 Core and therefore offers 384 Shader Processing Units, 32 TMUs and 16 ROPs, on a 128-bit memory interface of either fast GDDR5 or standard DDR3. The central unit's and operating memory clock's speed depend on the memory variant.
This is the DDR3 version and so the central unit runs at up to 967MHz and the memory clock operates at up to 1000MHz.
However, ultimately, laptop manufacturer's may change these values to their liking.
The DDR3 variant will perform considerably better than the GDDR5 version, on lower resolutions and is better suited for smaller notebooks.
|GeForce GTX 660M is a fast-middle-class GFX (despite its GTX naming). |
It's Based on the Kepler GK107 Core and therefore offers 384 CUDA Cores. It can be addressed as a GeForce GT 650M with GDDR5 or as a GeForce GT 650M GDDR5 with a faster central unit. Benchmarks indicate its performance is not much better than GeForce GT 650M and comes at a much higher price making GeForce GTX 660M a bad purchase considering its price to performance ratio. Despite its naming "GTX" its performance is very limited. Gaming enthusiasts will need to move further in the Series (GeForce GTX 670MX, GTX 675M, etc) if they desire fluent FPS at 1080p.