AMD FireStream 9250 vs ATI Radeon HD 4855

VS

We compared two Desktop platform GPUs: 1024MB VRAM FireStream 9250 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD FireStream 9250 's Advantages

More VRAM (1024GB vs 512GB)

160 additional rendering cores

ATI Radeon HD 4855 's Advantages

Released 1 years and 7 months late

Larger VRAM bandwidth (115.2GB/s vs 63.55GB/s)

Lower TDP (110W vs 150W)

Score

Benchmark

FP32 (float)

FireStream 9250 +35%

1 TFLOPS

Radeon HD 4855

0.736 TFLOPS

FireStream 9250

VS

Radeon HD 4855

Graphics Card

Jun 2008

Release Date

Jan 2010

FireStream

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

993 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

63.55GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

10

Compute Units

8

800

Shading Units

640

40

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

10.00 GPixel/s

Pixel Rate

9.200 GPixel/s

25.00 GTexel/s

Texture Rate

18.40 GTexel/s

-

FP16 (half)

-

1000 GFLOPS

FP32 (float)

736.0 GFLOPS

200.0 GFLOPS

FP64 (double)

147.2 GFLOPS

Graphics Processor

RV770

GPU Name

RV770

RV770 PRO

GPU Variant

RV770 PRO (215-0669065)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.956 billion

256 mm²

Die Size

256 mm²

Board Design

150W

TDP

110W

450 W

Suggested PSU

300 W

1x DVI

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

4.1

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