Radeon HD 7770 GHz Edition vs GeForce 8400 GS PCI Rev. 2

VS

Radeon HD 7770 GHz Edition GeForce 8400 GS PCI Rev. 2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 512MB VRAM GeForce 8400 GS PCI Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

Radeon HD 7770 GHz Edition 's Advantages

Released 4 years and 10 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 8.000GB/s)

624 additional rendering cores

GeForce 8400 GS PCI Rev. 2 's Advantages

Lower TDP (40W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +3182%

1280

GeForce 8400 GS PCI Rev. 2

39

Radeon HD 7770 GHz Edition

VS

GeForce 8400 GS PCI Rev. 2

Graphics Card

Feb 2012

Release Date

Apr 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

1125 MHz

Memory Clock

500 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

72.00GB/s

Bandwidth

8.000GB/s

Render Config

-

SM Count

2

10

Compute Units

-

640

Shading Units

16

40

TMUs

8

16

ROPs

4

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

32 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

2.080 GPixel/s

40.00 GTexel/s

Texture Rate

4.160 GTexel/s

1280 GFLOPS

FP32 (float)

39.36 GFLOPS

80.00 GFLOPS

FP64 (double)

-

Graphics Processor

Cape Verde

GPU Name

GT218

Cape Verde XT

GPU Variant

-

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

0.26 billion

123 mm²

Die Size

57 mm²

Board Design

80W

TDP

40W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1x VGA

1x 6-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.2

5.1

Shader Model

4.1

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