AMD Radeon HD 7770 GHz Edition vs ATI Radeon HD 2600 XT

VS

AMD Radeon HD 7770 GHz Edition

ATI Radeon HD 2600 XT

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 256MB VRAM ATI Radeon HD 2600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7770 GHz Edition 's Advantages

Released 4 years and 8 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (72.00GB/s vs 22.40GB/s)

520 additional rendering cores

ATI Radeon HD 2600 XT 's Advantages

Lower TDP (45W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +566%

1.28 TFLOPS

ATI Radeon HD 2600 XT

0.192 TFLOPS

Radeon HD 7770 GHz Edition

VS

ATI Radeon HD 2600 XT

Graphics Card

Feb 2012

Release Date

Jun 2007

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

700 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

22.40GB/s

Render Config

10

Compute Units

3

-

640

Shading Units

120

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

3.200 GPixel/s

40.00 GTexel/s

Texture Rate

6.400 GTexel/s

-

1280 GFLOPS

FP32 (float)

192.0 GFLOPS

80.00 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

45W

250 W

Suggested PSU

200 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

RV630

Cape Verde XT

GPU Variant

-

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

1.5 billion

Transistors

0.39 billion

123 mm²

Die Size

153 mm²

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.0

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