NVIDIA GeForce 8600 GT vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce 8600 GT

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 512MB VRAM GeForce 8600 GT and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8600 GT 's Advantages

Lower TDP (47W vs 65W)

NVIDIA GeForce GT 640 's Advantages

Released 5 years and 2 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (28.51GB/s vs 22.40GB/s)

352 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8600 GT

0.076 TFLOPS

GeForce GT 640 +811%

0.693 TFLOPS

GeForce 8600 GT

VS

GeForce GT 640

Graphics Card

Apr 2007

Release Date

Jun 2012

GeForce 8

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

700 MHz

Memory Clock

891 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

22.40GB/s

Bandwidth

28.51GB/s

Render Config

-

4

SM Count

-

32

Shading Units

384

16

TMUs

32

8

ROPs

16

-

L1 Cache

16 KB (per SMX)

32 KB

L2 Cache

256 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

7.216 GPixel/s

8.640 GTexel/s

Texture Rate

28.86 GTexel/s

-

76.16 GFLOPS

FP32 (float)

692.7 GFLOPS

-

FP64 (double)

28.86 GFLOPS

Board Design

47W

TDP

65W

200 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

None

Power Connectors

None

Graphics Processor

G84

GPU Name

GK107

G84-303-A2

GPU Variant

GK107-300-A2

Tesla

Architecture

Kepler

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.289 billion

Transistors

1.27 billion

169 mm²

Die Size

118 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

CUDA

3.0

4.0

Shader Model

5.1

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