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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7660G GeForce GT 650M v2 SLI
Cyberpunk 2077 1434% 276%
Assassins Creed: Valhalla 1316% 247%
Genshin Impact 1448% 280%
Call of Duty: Black Ops Cold War 1475% 287%
eFootball PES 2021 681% 92%
FIFA 21 681% 92%
Marvel's Avengers 1366% 260%
Watch Dogs Legion 1393% 266%
Mafia: Definitive Edition 2119% 445%
Microsoft Flight Simulator 1270% 236%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 650M v2 SLI are massively better than the AMD Radeon HD 7660G.

The GT 650M has a 249 MHz higher core clock speed and 40 more Texture Mapping Units than the Radeon HD 7660G. This results in the GT 650M providing 35.8 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 GT 650M has a 249 MHz higher core clock speed and 24 more Render Output Units than the Radeon HD 7660G. This results in the GT 650M providing 19.8 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 Radeon HD 7660G 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 GT 650M has 4096 MB video memory, but the Radeon HD 7660G does not have an entry, so the two GPUs cannot be reliably compared in this area.

The Radeon HD 7660G has 384 Shader Processing Units and the GeForce GT 650M v2 SLI has 768. However, the actual shader performance of the Radeon HD 7660G is 263 and the actual shader performance of the GT 650M is 572. The GT 650M having 309 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 Radeon HD 7660G.

The GT 650M transistor size technology is 4 nm (nanometers) smaller than the Radeon HD 7660G. This means that the GT 650M is expected to run very slightly cooler and achieve higher clock frequencies than the Radeon HD 7660G.

The Radeon HD 7660G requires 35 Watts to run and the GeForce GT 650M v2 SLI requires 90 Watts. The GT 650M requires 55 Watts more than the Radeon HD 7660G to run. The difference is significant enough that the GT 650M may have an adverse affect on your yearly electricity bills in comparison to the Radeon HD 7660G.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed496 MHzvs745 MHz
Boost Clock685 MHzvs-
ArchitectureTerascale 3: TrinityKepler GK107 (x2)
OC Potential None vs Fair
Driver Support - vs -
Release Date15 May 2012vs22 Mar 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - vs green tick
1920x1080 - vs green tick
2560x1440 - vs green tick
3840x2160 - vs green tick

GPU Memory

MemoryN/Avs4096 MB
Memory Speed800 MHzvs1000 MHz
Memory Bus128 Bitvs256 Bit
Memory TypeDDR3vsGDDR5
Memory Bandwidth25.6GB/secvs128GB/sec
L2 Cache - vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units384vs768
Actual Shader Performance13%vs28%
Texture Mapping Units24vs64
Texture Rate11.9 GTexel/svs47.7 GTexel/s
Render Output Units8vs32
Pixel Rate4 GPixel/svs23.8 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power35 Wattsvs90 Watts
Recommended PSU--

GPU Features

Shader Model5.0vs5.0
Open GL4.1vs4.1
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended ProcessorAMD APU A10-4600M Quad-CorevsIntel Core i7-3630QM 4-Core 2.4GHz
Recommended RAM-8 GB
Maximum Recommended Gaming Resolution-1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 7660G is an integrated GPU on the fast-middle-class Trinity CPUs.
It's based on the 32nm Terascale 3 architecture and offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The memory interface will depend on whether or not the laptop's system RAM is dual channelled (128-bit if so, 64-bit, if not) and the operating memory clock can be up to 800MHz (max speed supported by the CPU). The central unit runs at 496MHz and will go up to 685MHz in Turbo Mode. Expect a TDP of up to 35 Watt.
Its performance is considerably above Intel HD 4000 Graphics thanks to the high Shaders count which proves useful in most of today's modern Most of today's modern games can be playable using the Medium preset though the low preset will have to suffice for some of them. Extremely demanding games (e.g. Crysis 3) are playable at the lowest settings, using a 1024x768 resolution, smoothly.
GeForce GT 650M v2 SLI is a solution of two GeForce GT 650M v2 put together using NVIDIA's SLI technology.

The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs.
Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU.

It consists of 2 GPUs codenamed GK107 which, together, offer 768 Shader Processing Units, 64 TMUs and 32 ROPs, on a 256-bit memory interface of fast GDDR5. The central unit runs at 745MHz, while the memory clock operates at 1753MHz.

Power Consumption
Power Consumption lies between 85W and 95W. As a result, this combination may only be used in very large laptops.

Gaming benchmarks prove that GeForce GT 650M v2 SLI is overall as fast as a single GeForce GTX 670MX.

System Suggestions
We recommend a strong processor (Intel Core i7) and 8GB of RAM for a system with GeForce GT 650M v2 SLI.
Recommended CPU
Possible GPU Upgrades
GPU Variants