ATI Radeon HD 4770 vs ATI Radeon HD 3850 X2

VS

ATI Radeon HD 4770

ATI Radeon HD 3850 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 512MB VRAM Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

Released 1 years late

320 additional rendering cores

Lower TDP (80W vs 140W)

ATI Radeon HD 3850 X2 's Advantages

Larger VRAM bandwidth (52.99GB/s vs 51.20GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 4770 +124%

0.96 TFLOPS

Radeon HD 3850 X2

0.428 TFLOPS

Radeon HD 4770

VS

Radeon HD 3850 X2

Graphics Card

Apr 2009

Release Date

Apr 2008

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

828 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

51.20GB/s

Bandwidth

52.99GB/s

Render Config

8

Compute Units

4

-

640

Shading Units

320

32

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

10.70 GPixel/s

24.00 GTexel/s

Texture Rate

10.70 GTexel/s

-

960.0 GFLOPS

FP32 (float)

428.2 GFLOPS

192.0 GFLOPS

FP64 (double)

85.63 GFLOPS

Board Design

80W

TDP

140W

250 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

-

Graphics Processor

RV740

GPU Name

RV670

RV740 XT (215-0727019)

GPU Variant

RV670 PRO (215-0708003)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.826 billion

Transistors

0.666 billion

137 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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