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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 650M SLI are significantly better than the Nvidia GeForce GT 750M.

The GeForce GT 750M has a 177 MHz higher core clock speed than the GT 650M, but the GT 650M has 32 more Texture Mapping Units than the GeForce GT 750M. As a result, the GT 650M exhibits a 19.7 GTexel/s better Texture Fill Rate than the GeForce GT 750M. 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 177 MHz higher core clock speed than the GT 650M, but the GT 650M has 16 more Render Output Units than the GeForce GT 750M. As a result, the GT 650M exhibits a 9.8 GPixel/s better Pixel Fill Rate than the GeForce GT 750M. 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 less than a year after the GT 650M, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GeForce GT 650M SLI and the GeForce GT 750M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GT 650M has 96 GB/sec greater memory bandwidth than the GeForce GT 750M, which means that the memory performance of the GT 650M is massively better than the GeForce GT 750M.

The GeForce GT 650M SLI has 768 Shader Processing Units and the GeForce GT 750M has 384. However, the actual shader performance of the GT 650M is 607 and the actual shader performance of the GeForce GT 750M is 371. The GT 650M having 236 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 650M delivers a massively smoother and more efficient experience when processing graphical data than the GeForce GT 750M.

The GeForce GT 650M SLI requires 90 Watts to run and the GeForce GT 750M requires 50 Watts. The GT 650M requires 40 Watts more than the GeForce GT 750M to run. The difference is significant enough that the GT 650M may have a slight adverse affect on your yearly electricity bills in comparison to the GeForce GT 750M.

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GPU Core Details

Core Speed790 MHzvs967 MHz
ArchitectureKepler GK107 (x2)Kepler GK107
Notebook GPUyesyes
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Release Date22 Mar 201201 Apr 2013
GPU LinkGD LinkGD Link
Approved
Comparison

GPU Memory

Memory4096 MBvs4096 MB
Memory Speed1000 MHzvs1000 MHz
Memory Bus256 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth128GB/secvs32GB/sec
L2 Cache - vs green tick 256 KB
Comparison

GPU Display

Shader Processing Units768vs384
Actual Shader Performance607vs371
Technology28nmvs28nm
Texture Mapping Units64vs32
Texture Rate50.6 GTexel/svs30.9 GTexel/s
Render Output Units32vs16
Pixel Rate25.3 GPixel/svs15.5 GPixel/s
Comparison

GPU Display Tech

DirectX11.1vs11.1
Shader Model5.0vs5.0
Open GL4.1vs4.3
Max Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
Comparison

GPU Power Requirements

Max Power90 Wattsvs50 Watts

GPU Supporting Hardware

Recommended RAM6 GBvs8 GB
Recommended Screen Size1600x9001366x768
Recommended PSU--

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GT 650M SLI is a solution of two GeForce GT 650M GDDR5 put together using NVIDIA'S SLI technology.
Check the page of GeForce GT 650M GDDR5 to know more about its chip.
As usual, SLI relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is on level with a single GeForce GTX 670MX. However, its performance may be the same or worse as a single GT 650M, depending on whether or not the 3D game supports SLI.
Even so, most demanding games will run at the highest settings.
It's worth mentioning SLIed GT 650M are only made with GDDR5 variants of GT 650M.
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.
Recommended CPUAMD APU A8-3550MX Quad-Core
Intel Core i3-3227U 1.9GHz
AMD APU A8-4500M Quad-Core
Intel Core i3-2348M 2.3GHz
Intel Core 2 Quad Q9000 2.0GHz
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Possible GPU Upgrades--
GPU Variants--