AMD Radeon HD 7970 X2 vs NVIDIA GeForce 8800 Ultra

VS

AMD Radeon HD 7970 X2

NVIDIA GeForce 8800 Ultra

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 X2 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 7970 X2 's Advantages

Released 5 years and 3 months late

More VRAM (3GB vs 768GB)

Larger VRAM bandwidth (264.0GB/s vs 103.7GB/s)

1920 additional rendering cores

NVIDIA GeForce 8800 Ultra 's Advantages

Lower TDP (171W vs 500W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 X2 +879%

3.789 TFLOPS

GeForce 8800 Ultra

0.387 TFLOPS

Radeon HD 7970 X2

VS

GeForce 8800 Ultra

Graphics Card

Aug 2012

Release Date

May 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1080 MHz

Memory

3GB

Memory Size

768MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

384bit

264.0GB/s

Bandwidth

103.7GB/s

Render Config

32

Compute Units

-

SM Count

16

2048

Shading Units

128

TMUs

32

ROPs

24

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

96 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

14.69 GPixel/s

118.4 GTexel/s

Texture Rate

39.17 GTexel/s

-

3.789 TFLOPS

FP32 (float)

387.1 GFLOPS

947.2 GFLOPS

FP64 (double)

-

Board Design

500W

TDP

171W

900 W

Suggested PSU

450 W

2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

2x DVI 1x S-Video

3x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

New Zealand

GPU Name

G80

-

GPU Variant

G80-450-A3

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

90 nm

4.313 billion

Transistors

0.681 billion

352 mm²

Die Size

484 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1 (1.0)

1.2

Vulkan

N/A

-

CUDA

1.0

5.1

Shader Model

4.0

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