ATI Radeon HD 2900 XTX vs AMD Radeon Sky 900

VS

ATI Radeon HD 2900 XTX AMD Radeon Sky 900

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XTX and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XTX 's Advantages

Lower TDP (240W vs 300W)

AMD Radeon Sky 900 's Advantages

Boost Clock950MHz

Larger VRAM bandwidth (240.0GB/s vs 106.0GB/s)

1472 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 2900 XTX

0.476 TFLOPS

Radeon Sky 900 +615%

3.405 TFLOPS

Radeon HD 2900 XTX

VS

Radeon Sky 900

Graphics Card

Unknown

Release Date

Mar 2013

Radeon R600

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

825 MHz

-

Boost Clock

950 MHz

828 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

3GB

GDDR3

Memory Type

GDDR5

512bit

Memory Bus

384bit

106.0GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

4

Compute Units

28

320

Shading Units

1792

16

TMUs

112

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

11.89 GPixel/s

Pixel Rate

30.40 GPixel/s

11.89 GTexel/s

Texture Rate

106.4 GTexel/s

-

FP16 (half)

-

475.5 GFLOPS

FP32 (float)

3.405 TFLOPS

-

FP64 (double)

851.2 GFLOPS

Graphics Processor

R600

GPU Name

Tahiti

R600 XTX A11 (215RGMDKA11FG)

GPU Variant

Orthrus

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

4.313 billion

420 mm²

Die Size

352 mm²

Board Design

240W

TDP

300W

550 W

Suggested PSU

700 W

2x DVI 1x S-Video

Outputs

1x DVI 1x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

2x 8-pin

Graphics Features

10.0 (10_0)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

4.0

Shader Model

5.1

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