ATI Radeon HD 2600 XT Mac Edition vs AMD Radeon HD 7870 GHz Edition

VS

ATI Radeon HD 2600 XT Mac Edition

AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 256MB VRAM Radeon HD 2600 XT Mac Edition and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2600 XT Mac Edition 's Advantages

Lower TDP (45W vs 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 4 years and 1 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (153.6GB/s vs 25.60GB/s)

1160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 2600 XT Mac Edition

0.168 TFLOPS

Radeon HD 7870 GHz Edition +1423%

2.56 TFLOPS

Radeon HD 2600 XT Mac Edition

VS

Radeon HD 7870 GHz Edition

Graphics Card

Feb 2008

Release Date

Mar 2012

Radeon R600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1200 MHz

Memory

256MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

25.60GB/s

Bandwidth

153.6GB/s

Render Config

3

Compute Units

20

-

120

Shading Units

1280

8

TMUs

80

4

ROPs

32

-

L1 Cache

16 KB (per CU)

64 KB

L2 Cache

512 KB

-

Theoretical Performance

2.800 GPixel/s

Pixel Rate

32.00 GPixel/s

5.600 GTexel/s

Texture Rate

80.00 GTexel/s

-

168.0 GFLOPS

FP32 (float)

2.560 TFLOPS

-

FP64 (double)

160.0 GFLOPS

Board Design

45W

TDP

175W

200 W

Suggested PSU

450 W

2x DVI

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

RV630

GPU Name

Pitcairn

-

GPU Variant

Pitcairn XT (215-0828047)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

65 nm

Process Size

28 nm

0.39 billion

Transistors

2.8 billion

153 mm²

Die Size

212 mm²

Graphics Features

10.0 (10_0)

DirectX

12 (11_1)

3.3

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.0

Shader Model

5.1

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