Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R7 7860K GeForce GT 640
Cyberpunk 2077 549% 653%
Hitman 3 745% 880%
Resident Evil 8 549% 653%
Assassins Creed: Valhalla 494% 589%
FIFA 21 228% 280%
Grand Theft Auto VI 814% 960%
Call of Duty: Black Ops Cold War 475% 567%
Genshin Impact 549% 653%
Far Cry 6 840% 990%
The Medium 710% 840%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R7 7860K are very slightly better than the Nvidia GeForce GT 640.

The GeForce GT 640 has a 145 MHz higher core clock speed and the same number of Texture Mapping Units as the Radeon R7 7860K. This results in the GeForce GT 640 providing 4.7 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 640 has a 145 MHz higher core clock speed and 8 more Render Output Units than the Radeon R7 7860K. This results in the GeForce GT 640 providing 8.3 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 R7 7860K was released over three years more recently than the GeForce GT 640, and so the Radeon R7 7860K is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce GT 640 when running the latest games.

The GeForce GT 640 has 2048 MB video memory, but the Radeon R7 7860K does not have an entry, so the two GPUs cannot be reliably compared in this area.

The Radeon R7 7860K has 512 Shader Processing Units and the GeForce GT 640 has 384. However, the actual shader performance of the Radeon R7 7860K is 252 and the actual shader performance of the GeForce GT 640 is 346. The GeForce GT 640 having 94 better shader performance is not particularly notable, as altogether the Radeon R7 7860K performs better when taking into account other relevant data.

The Radeon R7 7860K requires 65 Watts to run and the GeForce GT 640 requires 65 Watts. We would recommend a PSU with at least 300 Watts for the Radeon R7 7860K and a PSU with at least 350 Watts for the GeForce GT 640. 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.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed757 MHzvs902 MHz
Boost Clock-vs-
ArchitectureKaveri SpectreKepler GK107-300-A2
OC Potential None vs Fair
Driver Support - vs Good
Release Date02 Feb 2016vs05 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
6.6
1600x900 - vs green tick
5.1
1920x1080 - vs green tick
3.5
2560x1440 - vs green tick
2.5
3840x2160 - vs green tick
1.7

GPU Memory

MemoryN/Avs2048 MB
Memory Speed1067 MHzvs891 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth34.1GB/secvs28.5GB/sec
L2 Cache 0 KB vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units512vs384
Actual Shader Performance12%vs17%
Technology28nmvs28nm
Texture Mapping Units32vs32
Texture Rate24.2 GTexel/svs28.9 GTexel/s
Render Output Units8vs16
Pixel Rate6.1 GPixel/svs14.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs1
DVI Connections0vs1
HDMI Connections0vs1
DisplayPort Connections0vs-
Comparison

GPU Power Requirements

Max Power65 Wattsvs65 Watts
Recommended PSU300 Watts & 22 Ampsvs350 Watts & 26 Amps

GPU Features

DirectX11.2vs12.0
Shader Model5.0vs5.0
Open GL4.3vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsno
Dedicatednovsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorAMD APU A10-7860K Quad-CorevsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R7 7860K is an integrated Graphics Card in the APU A10-7860K.

It is based on the Graphics Core Next Architecture and offers 512 Shader Processing Units, 32 TMUs and 8 ROPs. The memory bus-width will depend on whether or not the system's RAM is dual-channeled and the operating memory clock, on its frequency. Thus, it can be either 64-bit or 128-bit and up to 1067MHz.
The Graphics Card also shares the processor's L2 Cache of 4MB, reducing the impact of its low memory bandwidth.

Overall, the Graphics Card's performance depends a lot on the system configuration. Best case scenario, expect performance superior to Intel's powerful Iris Pro Graphics 5200 and almost similar to the dedicated Radeon HD 7750.
The card is thus suited for 720p gaming and most modern demanding games can be played at least on medium settings.
Overview
GeForce GT 640 is a Middle-Class Graphics Card based on the first revision of the Kepler Architecture.

Architecture
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.

GPU
It equips a GPU Codenamed GK107-300-A2 which has 2 Stream Multiprocessor activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is clocked at 902MHz.

Memory
The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 891MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for Optimus, CUDA, OpenCL, DirectCompute, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 65W, it requires at least a 350W PSU and it relies entirely on the PCI Slot for power, meaning no extra connectors are required.

Performance
Gaming benchmarks put its performance on average with Radeon HD 6670.

System Suggestions
We recommend a Modest Processor (Intel Core i3) and 8GB of RAM for a system with GeForce GT 640.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-