ATI Radeon HD 4870 X2 vs ATI FireGL V7700

VS

ATI Radeon HD 4870 X2

ATI FireGL V7700

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 512MB VRAM FireGL V7700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

Released 9 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 72.06GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2 +141%

1.2 TFLOPS

FireGL V7700

0.497 TFLOPS

Radeon HD 4870 X2

VS

FireGL V7700

Graphics Card

Aug 2008

Release Date

Nov 2007

Radeon R700

Generation

FireGL

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1126 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

72.06GB/s

Render Config

10

Compute Units

4

-

800

Shading Units

320

40

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

12.43 GPixel/s

30.00 GTexel/s

Texture Rate

12.43 GTexel/s

-

1200 GFLOPS

FP32 (float)

497.3 GFLOPS

240.0 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

286W

TDP

Unknown

600 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x DisplayPort 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

R700

GPU Name

RV670

R700 XT (215-0669045)

GPU Variant

RV670 GL

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.666 billion

256 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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