Report an Error

NVIDIA GeForce 8800 GTS 640

NVIDIA GeForce 8800 GTS 640 Image NVIDIA G80 Image

Graphics Processor

GPU Name: G80
GPU Variant: G80-100-K0-A2
Process Size: 90 nm
Transistors: 681 million
Die Size: 484 mm²

Graphics Card

Released: Nov 8th, 2006
Production Status: End-of-life
Launch Price: 449 USD
Bus Interface: PCIe 1.0 x16

Clock Speeds

GPU Clock: 513 MHz
Shader Clock: 1188 MHz
Memory Clock: 792 MHz
1584 MHz effective

Memory

Memory Size: 640 MB
Memory Type: GDDR3
Memory Bus: 320 bit
Bandwidth: 63.4 GB/s

Render Config

Shading Units: 96
TMUs: 24
ROPs: 20
SM Count: 6
Pixel Rate: 10.3 GPixel/s
Texture Rate: 12.3 GTexel/s
Floating-point performance: 228.1 GFLOPS

Reference Board

Slot Width: Dual-slot
Length: 10.5 inches
267 mm
TDP: 143 W
Outputs: 2x DVI
1x S-Video

Graphics Features

DirectX: 10.0
OpenGL: 3.3
OpenCL: n/a
Shader Model: 4.0

VGA BIOS

Find graphics card BIOS for this card.

GPU-Z Validation

Find GPU-Z validations for this card.

Reviews

Our review database contains 403 reviews of the GeForce 8800 GTS 640.

G80 GPU Notes

Compute Capability: CUDA 1.0

Each Streaming Multiprocessor(SM) in the chip architecture contains 8 SPs and 2 SFUs.

Each SP can fulfill up to two single precision operations MAD per clock.

Each SFU can fulfill up to four operations SF per clock (these units can also handle single-precision floating-point multiplications per clock).

The approximate ratio of operations MAD to operations SF is equal 2:1.

The theoretical SP + SFU performance in single-precision floating point operations
[FLOPSsp + sfu, GFLOPS] of the graphics card with shader count [n] and shader frequency [f, GHz], is estimated by the following formula: FLOPSsp+sfu; f × n × 3.

Alternative formula: FLOPSsp+sfu; f × m × ( 8 SPs * 2 (MAD) + 4 * 2 SFUs ). [m] - SM count.

SP - Shader Processor (Unified Shader, CUDA Core)
SFU - Special Function Unit
SM - Streaming Multiprocessor
MAD - ADD+MUL

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
EVGA 8800 GTS KO ACS³ 580 MHz 850 MHz