AMD Radeon HD 7770 GHz Edition vs NVIDIA GeForce 8400 SE

VS

AMD Radeon HD 7770 GHz Edition

NVIDIA GeForce 8400 SE

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 128MB VRAM GeForce 8400 SE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7770 GHz Edition 's Advantages

Released 3 years and 6 months late

More VRAM (1024GB vs 128GB)

Larger VRAM bandwidth (72.00GB/s vs 6.400GB/s)

624 additional rendering cores

NVIDIA GeForce 8400 SE 's Advantages

Lower TDP (50W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +4313%

1.28 TFLOPS

GeForce 8400 SE

0.029 TFLOPS

Radeon HD 7770 GHz Edition

VS

GeForce 8400 SE

Graphics Card

Feb 2012

Release Date

Aug 2008

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

128MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

72.00GB/s

Bandwidth

6.400GB/s

Render Config

10

Compute Units

-

SM Count

2

640

Shading Units

16

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

1.836 GPixel/s

40.00 GTexel/s

Texture Rate

3.672 GTexel/s

-

1280 GFLOPS

FP32 (float)

29.38 GFLOPS

80.00 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

50W

250 W

Suggested PSU

250 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

Cape Verde

GPU Name

G86S

Cape Verde XT

GPU Variant

-

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.5 billion

Transistors

0.21 billion

123 mm²

Die Size

127 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

5.1

Shader Model

4.0

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