AMD Radeon HD 7850 vs AMD Radeon HD 6450 OEM

VS

AMD Radeon HD 7850

AMD Radeon HD 6450 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 and 512MB VRAM Radeon HD 6450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7850 's Advantages

Released 1 years and 1 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 8.528GB/s)

864 additional rendering cores

AMD Radeon HD 6450 OEM 's Advantages

Lower TDP (18W vs 130W)

Score

Benchmark

FP32 (float)

Radeon HD 7850 +780%

1.761 TFLOPS

Radeon HD 6450 OEM

0.2 TFLOPS

Radeon HD 7850

VS

Radeon HD 6450 OEM

Graphics Card

Mar 2012

Release Date

Feb 2011

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

533 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

8.528GB/s

Render Config

16

Compute Units

2

-

1024

Shading Units

160

64

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

27.52 GPixel/s

Pixel Rate

2.500 GPixel/s

55.04 GTexel/s

Texture Rate

5.000 GTexel/s

-

1.761 TFLOPS

FP32 (float)

200.0 GFLOPS

110.1 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

18W

300 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

Caicos

Pitcairn PRO (215-0828062)

GPU Variant

Junbonator

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.37 billion

212 mm²

Die Size

67 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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