AMD Radeon HD 7850 vs ATI Radeon X1550 PCI

VS

AMD Radeon HD 7850

ATI Radeon X1550 PCI

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 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 7850 's Advantages

Released 5 years and 2 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (153.6GB/s vs 4.256GB/s)

1024 additional rendering cores

ATI Radeon X1550 PCI 's Advantages

Lower TDP (27W vs 130W)

Score

Radeon HD 7850

VS

Radeon X1550 PCI

Graphics Card

Mar 2012

Release Date

Jan 2007

Southern Islands

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

266 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

4.256GB/s

Render Config

16

Compute Units

-

1024

Shading Units

-

64

TMUs

4

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

-

Theoretical Performance

27.52 GPixel/s

Pixel Rate

1.808 GPixel/s

55.04 GTexel/s

Texture Rate

1.808 GTexel/s

-

1.761 TFLOPS

FP32 (float)

-

110.1 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

27W

300 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

RV516

Pitcairn PRO (215-0828062)

GPU Variant

-

GCN 1.0

Architecture

R500

TSMC

Foundry

UMC

28 nm

Process Size

80 nm

2.8 billion

Transistors

0.107 billion

212 mm²

Die Size

100 mm²

Graphics Features

12 (11_1)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

3.0

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