AMD Radeon HD 6870 X2 vs NVIDIA GeForce 8500 GT

VS

AMD Radeon HD 6870 X2

NVIDIA GeForce 8500 GT

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 256MB VRAM GeForce 8500 GT 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 256GB)

Larger VRAM bandwidth (134.4GB/s vs 12.80GB/s)

1104 additional rendering cores

NVIDIA GeForce 8500 GT 's Advantages

Lower TDP (30W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2 +6851%

2.016 TFLOPS

GeForce 8500 GT

0.029 TFLOPS

Radeon HD 6870 X2

VS

GeForce 8500 GT

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

400 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

12.80GB/s

Render Config

14

Compute Units

-

SM Count

2

1120

Shading Units

16

56

TMUs

8

32

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

1.836 GPixel/s

50.40 GTexel/s

Texture Rate

3.672 GTexel/s

-

2.016 TFLOPS

FP32 (float)

29.38 GFLOPS

-

Board Design

300W

TDP

30W

700 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

-

Power Connectors

None

Graphics Processor

Barts

GPU Name

G86

Barts XT (215-0798000)

GPU Variant

G86-300-A2

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

1.7 billion

Transistors

0.21 billion

255 mm²

Die Size

127 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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