AMD Radeon HD 6770 vs ATI Radeon X1550 PCI

VS

AMD Radeon HD 6770

ATI Radeon X1550 PCI

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6770 and 256MB VRAM Radeon X1550 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770 's Advantages

Released 4 years late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (76.80GB/s vs 4.256GB/s)

800 additional rendering cores

ATI Radeon X1550 PCI 's Advantages

Lower TDP (27W vs 108W)

Score

Radeon HD 6770

VS

Radeon X1550 PCI

Graphics Card

Jan 2011

Release Date

Jan 2007

Northern Islands

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

266 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

76.80GB/s

Bandwidth

4.256GB/s

Render Config

10

Compute Units

-

800

Shading Units

-

40

TMUs

4

16

ROPs

4

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

1.808 GPixel/s

34.00 GTexel/s

Texture Rate

1.808 GTexel/s

-

1360 GFLOPS

FP32 (float)

-

Board Design

108W

TDP

27W

300 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

Juniper

GPU Name

RV516

Juniper XT (215-0754013)

GPU Variant

-

TeraScale 2

Architecture

R500

TSMC

Foundry

UMC

40 nm

Process Size

80 nm

1.04 billion

Transistors

0.107 billion

166 mm²

Die Size

100 mm²

Graphics Features

11.2 (11_0)

DirectX

9.0c (9_3)

4.4

OpenGL

2.1

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

3.0

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