NVIDIA GeForce GT 640 vs NVIDIA GeForce 8600 GTS

VS

NVIDIA GeForce GT 640

NVIDIA GeForce 8600 GTS

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 256MB VRAM GeForce 8600 GTS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 5 years and 2 months late

More VRAM (2GB vs 256GB)

352 additional rendering cores

NVIDIA GeForce 8600 GTS 's Advantages

Larger VRAM bandwidth (32.00GB/s vs 28.51GB/s)

Lower TDP (60W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GT 640 +645%

0.693 TFLOPS

GeForce 8600 GTS

0.093 TFLOPS

GeForce GT 640

VS

GeForce 8600 GTS

Graphics Card

Jun 2012

Release Date

Apr 2007

GeForce 600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

891 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

32.00GB/s

Render Config

-

SM Count

4

384

Shading Units

32

TMUs

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

5.400 GPixel/s

28.86 GTexel/s

Texture Rate

10.80 GTexel/s

-

692.7 GFLOPS

FP32 (float)

92.80 GFLOPS

28.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

60W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin

Graphics Processor

GK107

GPU Name

G84

GK107-300-A2

GPU Variant

G84-400-A2

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.27 billion

Transistors

0.289 billion

118 mm²

Die Size

169 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.1

5.1

Shader Model

4.0

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