NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce 8600 GT Mac Edition

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce 8600 GT Mac Edition

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 128MB VRAM GeForce 8600 GT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 5 years late

More VRAM (1536GB vs 128GB)

Larger VRAM bandwidth (38.40GB/s vs 24.00GB/s)

112 additional rendering cores

NVIDIA GeForce 8600 GT Mac Edition 's Advantages

Lower TDP (47W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand +346%

0.415 TFLOPS

GeForce 8600 GT Mac Edition

0.093 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce 8600 GT Mac Edition

Graphics Card

Apr 2012

Release Date

Apr 2007

GeForce 600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

800 MHz

Memory Clock

750 MHz

Memory

1536MB

Memory Size

128MB

DDR3

Memory Type

GDDR3

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

24.00GB/s

Render Config

-

3

SM Count

4

144

Shading Units

32

24

TMUs

16

24

ROPs

8

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

32 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

4.800 GPixel/s

17.28 GTexel/s

Texture Rate

9.600 GTexel/s

-

414.7 GFLOPS

FP32 (float)

92.80 GFLOPS

34.56 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

47W

250 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

G84

GF116-150-A1

GPU Variant

G84-303-A2

Fermi 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

1.17 billion

Transistors

0.289 billion

238 mm²

Die Size

169 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

1.1

5.1

Shader Model

4.0

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