AMD Radeon HD 6990 vs ATI Radeon HD 4570 Rebrand

VS

AMD Radeon HD 6990

ATI Radeon HD 4570 Rebrand

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 1024MB VRAM Radeon HD 4570 Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990 's Advantages

Released 1 years and 4 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 12.67GB/s)

1416 additional rendering cores

ATI Radeon HD 4570 Rebrand 's Advantages

Lower TDP (65W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990 +1235%

2.55 TFLOPS

Radeon HD 4570 Rebrand

0.191 TFLOPS

Radeon HD 6990

VS

Radeon HD 4570 Rebrand

Graphics Card

Mar 2011

Release Date

Nov 2009

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

396 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

12.67GB/s

Render Config

24

Compute Units

3

-

1536

Shading Units

120

96

TMUs

8

32

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

128 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

3.184 GPixel/s

79.68 GTexel/s

Texture Rate

6.368 GTexel/s

-

2.550 TFLOPS

FP32 (float)

191.0 GFLOPS

637.4 GFLOPS

FP64 (double)

-

Board Design

375W

TDP

65W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

-

Graphics Processor

Antilles

GPU Name

RV635

Antilles XT (215-0807027)

GPU Variant

RV635 PRO (215-0682008)

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.378 billion

389 mm²

Die Size

135 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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