ATI Radeon HD 4770 vs AMD Radeon HD 8550 OEM

VS

ATI Radeon HD 4770

AMD Radeon HD 8550 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 1024MB VRAM Radeon HD 8550 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

Larger VRAM bandwidth (51.20GB/s vs 25.60GB/s)

160 additional rendering cores

AMD Radeon HD 8550 OEM 's Advantages

Released 4 years and 6 months late

More VRAM (1024GB vs 512GB)

Lower TDP (60W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 4770 +53%

0.96 TFLOPS

Radeon HD 8550 OEM

0.624 TFLOPS

Radeon HD 4770

VS

Radeon HD 8550 OEM

Graphics Card

Apr 2009

Release Date

Oct 2013

Radeon R700

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

51.20GB/s

Bandwidth

25.60GB/s

Render Config

8

Compute Units

6

-

640

Shading Units

480

32

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

5.200 GPixel/s

24.00 GTexel/s

Texture Rate

15.60 GTexel/s

-

960.0 GFLOPS

FP32 (float)

624.0 GFLOPS

192.0 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

60W

250 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

RV740

GPU Name

Turks

RV740 XT (215-0727019)

GPU Variant

Turks PRO (215-0803002)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.826 billion

Transistors

0.716 billion

137 mm²

Die Size

118 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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