AMD Radeon HD 6870 X2 vs NVIDIA GeForce 8600 GT Mac Edition

VS

AMD Radeon HD 6870 X2

NVIDIA GeForce 8600 GT Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 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

AMD Radeon HD 6870 X2 's Advantages

Released 4 years and 3 months late

More VRAM (1024GB vs 128GB)

Larger VRAM bandwidth (134.4GB/s vs 24.00GB/s)

1088 additional rendering cores

NVIDIA GeForce 8600 GT Mac Edition 's Advantages

Lower TDP (47W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2 +2067%

2.016 TFLOPS

GeForce 8600 GT Mac Edition

0.093 TFLOPS

Radeon HD 6870 X2

VS

GeForce 8600 GT Mac Edition

Graphics Card

Jul 2011

Release Date

Apr 2007

Northern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

750 MHz

Memory

1024MB

Memory Size

128MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

24.00GB/s

Render Config

14

Compute Units

-

SM Count

4

1120

Shading Units

32

56

TMUs

16

32

ROPs

8

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

4.800 GPixel/s

50.40 GTexel/s

Texture Rate

9.600 GTexel/s

-

2.016 TFLOPS

FP32 (float)

92.80 GFLOPS

-

Board Design

300W

TDP

47W

700 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

2x DVI

-

Power Connectors

None

Graphics Processor

Barts

GPU Name

G84

Barts XT (215-0798000)

GPU Variant

G84-303-A2

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

1.7 billion

Transistors

0.289 billion

255 mm²

Die Size

169 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

5.0

Shader Model

4.0

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