NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce 8600 GT Mac Edition

VS

NVIDIA GeForce GT 645 OEM

NVIDIA GeForce 8600 GT Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM 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 645 OEM 's Advantages

Released 5 years late

More VRAM (1024GB vs 128GB)

Larger VRAM bandwidth (91.87GB/s vs 24.00GB/s)

256 additional rendering cores

NVIDIA GeForce 8600 GT Mac Edition 's Advantages

Lower TDP (47W vs 102W)

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM +861%

0.894 TFLOPS

GeForce 8600 GT Mac Edition

0.093 TFLOPS

GeForce GT 645 OEM

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

-

957 MHz

Memory Clock

750 MHz

Memory

1024MB

Memory Size

128MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

128bit

91.87GB/s

Bandwidth

24.00GB/s

Render Config

-

6

SM Count

4

288

Shading Units

32

48

TMUs

16

24

ROPs

8

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

32 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

4.800 GPixel/s

37.25 GTexel/s

Texture Rate

9.600 GTexel/s

-

894.0 GFLOPS

FP32 (float)

92.80 GFLOPS

74.50 GFLOPS

FP64 (double)

-

Board Design

102W

TDP

47W

300 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI

-

Power Connectors

None

Graphics Processor

GF114

GPU Name

G84

-

GPU Variant

G84-303-A2

Fermi 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

1.95 billion

Transistors

0.289 billion

332 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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