AMD Radeon Sky 700 vs ATI Radeon HD 2900 GT

VS

AMD Radeon Sky 700

ATI Radeon HD 2900 GT

We compared two Desktop platform GPUs: 6GB VRAM Radeon Sky 700 and 256MB VRAM Radeon HD 2900 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 700 's Advantages

Released 5 years and 4 months late

More VRAM (6GB vs 256GB)

Larger VRAM bandwidth (264.0GB/s vs 51.20GB/s)

1552 additional rendering cores

ATI Radeon HD 2900 GT 's Advantages

Lower TDP (150W vs 225W)

Score

Benchmark

FP32 (float)

Radeon Sky 700 +1020%

3.226 TFLOPS

Radeon HD 2900 GT

0.288 TFLOPS

Radeon Sky 700

VS

Radeon HD 2900 GT

Graphics Card

Mar 2013

Release Date

Nov 2007

Radeon Sky

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

800 MHz

Memory

6GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

51.20GB/s

Render Config

28

Compute Units

3

-

1792

Shading Units

240

112

TMUs

12

32

ROPs

12

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

128 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

7.212 GPixel/s

100.8 GTexel/s

Texture Rate

7.212 GTexel/s

-

3.226 TFLOPS

FP32 (float)

288.5 GFLOPS

806.4 GFLOPS

FP64 (double)

-

Board Design

225W

TDP

150W

550 W

Suggested PSU

450 W

1x DisplayPort 1.2

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Tahiti

GPU Name

R600

Tahiti PRO GL

GPU Variant

R600 GT (215RGFDKA13FG)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

4.313 billion

Transistors

0.72 billion

352 mm²

Die Size

420 mm²

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.0

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