ATI Radeon HD 4855 vs AMD Radeon R7 250E

VS

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4855 and 1024MB VRAM Radeon R7 250E to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 72.00GB/s)

128 additional rendering cores

AMD Radeon R7 250E 's Advantages

Released 3 years and 11 months late

More VRAM (1024GB vs 512GB)

Lower TDP (55W vs 110W)

Score

Benchmark

FP32 (float)

Radeon HD 4855

0.736 TFLOPS

Radeon R7 250E +11%

0.819 TFLOPS

Radeon HD 4855

VS

Radeon R7 250E

Graphics Card

Jan 2010

Release Date

Dec 2013

Radeon R700

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1125 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

72.00GB/s

Render Config

-

SM Count

-

8

Compute Units

8

640

Shading Units

512

32

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

9.200 GPixel/s

Pixel Rate

12.80 GPixel/s

18.40 GTexel/s

Texture Rate

25.60 GTexel/s

-

FP16 (half)

-

736.0 GFLOPS

FP32 (float)

819.2 GFLOPS

147.2 GFLOPS

FP64 (double)

51.20 GFLOPS

Graphics Processor

RV770

GPU Name

Cape Verde

RV770 PRO (215-0669065)

GPU Variant

Cape Verde PRO

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

1.5 billion

256 mm²

Die Size

123 mm²

Board Design

110W

TDP

55W

300 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 6-pin

Power Connectors

None

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

4.1

Shader Model

5.1

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