NVIDIA GeForce 8600 GTS vs NVIDIA GeForce GT 640

Table of Contents

Graphics Processor

GPU model G84 GK107
GPU variant G84-400-A2 GK107-300-A2
Architecture Tesla Kepler
Foundry TSMC TSMC
Manufacturing process 80 nm 28 nm
Number of transistors 289 million 1,270 million
Die size 169 mm² 118 mm²

Graphics Card

Release date Apr 17th, 2007 Jun 5th, 2012
Generation GeForce 8 GeForce 600
Production End-of-life End-of-life
Launch price 199 USD 99 USD
Interface PCIe 1.0 x16 PCIe 3.0 x16
Reviews 183 in our database
Predecessor GeForce 7 PCIe GeForce 500
Successor GeForce 9 GeForce 700

Clocks

GPU clock 675 MHz 902 MHz
Shader clock 1450 MHz
Memory clock 1000 MHz 2 Gbps effective 891 MHz 1782 Mbps effective

Memory Configuration

Memory size 256 MB 2 GB
Memory type GDDR3 DDR3
Memory bus width 128 bit 128 bit
Bandwidth 32.00 GB/s 28.51 GB/s

Render Configuration

Shading units 32 384
TMUs 16 32
ROPs 8 16
SM count 4
Cache L2 32 KB 256 KB
SMX count 2
Cache L1 16 KB (per SMX)

Performance

Pixel rate 5.400 GPixel/s 7.216 GPixel/s
Texture rate 10.80 GTexel/s 28.86 GTexel/s
FP32 (float) performance 92.80 GFLOPS 692.7 GFLOPS
FP64 (double) performance 28.86 GFLOPS (1:24)

Dimensions & Outputs

Slot width Single-slot Single-slot
Length 198 mm 7.8 inches 145 mm 5.7 inches
TDP 60 W 65 W
Suggested PSU 250 W 250 W
Outputs 2x DVI1x S-Video 1x DVI1x HDMI1x DisplayPort
Power connectors 1x 6-pin None
Board number P401 P2011

API Support & Features

DirectX 11.1 (10_0) 12 (11_0)
OpenGL 3.3 4.6
OpenCL 1.1 3.0
Vulkan 1.1
CUDA 1.1 3.0
Shader model 4.0 5.1

Other Features

Compare

Sysrqmts browser extension icon
Stop overpaying for PC games!
See cheapest prices in Steam store with our browser extension.