AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce 8800 Ultra

VS

AMD Radeon HD 7870 GHz Edition

NVIDIA GeForce 8800 Ultra

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition 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 7870 GHz Edition 's Advantages

Released 4 years and 10 months late

More VRAM (2GB vs 768GB)

Larger VRAM bandwidth (153.6GB/s vs 103.7GB/s)

1152 additional rendering cores

NVIDIA GeForce 8800 Ultra 's Advantages

Lower TDP (171W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +561%

2.56 TFLOPS

GeForce 8800 Ultra

0.387 TFLOPS

Radeon HD 7870 GHz Edition

VS

GeForce 8800 Ultra

Graphics Card

Mar 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

-

1200 MHz

Memory Clock

1080 MHz

Memory

2GB

Memory Size

768MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

384bit

153.6GB/s

Bandwidth

103.7GB/s

Render Config

20

Compute Units

-

SM Count

16

1280

Shading Units

128

80

TMUs

32

ROPs

24

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

96 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

14.69 GPixel/s

80.00 GTexel/s

Texture Rate

39.17 GTexel/s

-

2.560 TFLOPS

FP32 (float)

387.1 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

171W

450 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Pitcairn

GPU Name

G80

Pitcairn XT (215-0828047)

GPU Variant

G80-450-A3

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

90 nm

2.8 billion

Transistors

0.681 billion

212 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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