AMD Radeon HD 6850 vs NVIDIA GeForce 8800 Ultra

VS

AMD Radeon HD 6850

NVIDIA GeForce 8800 Ultra

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 768MB VRAM GeForce 8800 Ultra to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 's Advantages

Released 3 years and 5 months late

More VRAM (1024GB vs 768GB)

Larger VRAM bandwidth (128.0GB/s vs 103.7GB/s)

832 additional rendering cores

Lower TDP (127W vs 171W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 +284%

1.488 TFLOPS

GeForce 8800 Ultra

0.387 TFLOPS

Radeon HD 6850

VS

GeForce 8800 Ultra

Graphics Card

Oct 2010

Release Date

May 2007

Northern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1080 MHz

Memory

1024MB

Memory Size

768MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

384bit

128.0GB/s

Bandwidth

103.7GB/s

Render Config

12

Compute Units

-

SM Count

16

960

Shading Units

128

48

TMUs

32

ROPs

24

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

96 KB

-

Theoretical Performance

24.80 GPixel/s

Pixel Rate

14.69 GPixel/s

37.20 GTexel/s

Texture Rate

39.17 GTexel/s

-

1488 GFLOPS

FP32 (float)

387.1 GFLOPS

-

Board Design

127W

TDP

171W

300 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Barts

GPU Name

G80

Barts PRO (215-0798006)

GPU Variant

G80-450-A3

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

90 nm

1.7 billion

Transistors

0.681 billion

255 mm²

Die Size

484 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1 (1.0)

N/A

Vulkan

N/A

-

CUDA

1.0

5.0

Shader Model

4.0

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