AMD FireStream 9250 vs NVIDIA GeForce GT 640 OEM

Table of Contents

Graphics Processor

GPU model RV770 GK107
GPU variant RV770 PRO GK107-320-A2
Architecture TeraScale Kepler
Foundry TSMC TSMC
Manufacturing process 55 nm 28 nm
Number of transistors 956 million 1,270 million
Die size 256 mm² 118 mm²

Graphics Card

Release date Jun 16th, 2008 Apr 24th, 2012
Generation FireStream GeForce 600
Production End-of-life End-of-life
Interface PCIe 2.0 x16 PCIe 3.0 x16
Predecessor GeForce 500
Successor GeForce 700

Clocks

GPU clock 625 MHz 797 MHz
Memory clock 993 MHz 1986 Mbps effective 891 MHz 1782 Mbps effective

Memory Configuration

Memory size 1024 MB 2 GB
Memory type GDDR3 DDR3
Memory bus width 256 bit 128 bit
Bandwidth 63.55 GB/s 28.51 GB/s

Render Configuration

Shading units 800 384
TMUs 40 32
ROPs 16 16
Compute units 10
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 256 KB 256 KB
SMX count 2

Performance

Pixel rate 10.00 GPixel/s 6.376 GPixel/s
Texture rate 25.00 GTexel/s 25.50 GTexel/s
FP32 (float) performance 1,000 GFLOPS 612.1 GFLOPS
FP64 (double) performance 200.0 GFLOPS (1:5) 25.50 GFLOPS (1:24)

Dimensions & Outputs

Slot width Single-slot Single-slot
Length 234 mm 9.2 inches 145 mm 5.7 inches
Width 111 mm 4.4 inches
TDP 150 W 50 W
Suggested PSU 450 W 250 W
Outputs 1x DVI 1x DVI1x HDMI1x DisplayPort
Power connectors 1x 6-pin None
Board number P2010

API Support & Features

DirectX 10.1 (10_1) 12 (11_0)
OpenGL 3.3 4.6
OpenCL 1.1 3.0
Vulkan 1.1
Shader model 4.1 5.1
CUDA 3.0

Other Features

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