NVIDIA GeForce 8400 vs AMD Radeon HD 6770

VS

NVIDIA GeForce 8400

AMD Radeon HD 6770

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 1024MB VRAM Radeon HD 6770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 's Advantages

Lower TDP (25W vs 108W)

AMD Radeon HD 6770 's Advantages

Released 3 years and 1 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (76.80GB/s vs 8.000GB/s)

792 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 6770 +6376%

1.36 TFLOPS

GeForce 8400

VS

Radeon HD 6770

Graphics Card

Dec 2007

Release Date

Jan 2011

GeForce 8

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

1200 MHz

Memory

256MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

128bit

8.000GB/s

Bandwidth

76.80GB/s

Render Config

-

Compute Units

10

1

SM Count

-

8

Shading Units

800

4

TMUs

40

4

ROPs

16

-

L1 Cache

8 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

13.60 GPixel/s

2.160 GTexel/s

Texture Rate

34.00 GTexel/s

-

20.80 GFLOPS

FP32 (float)

1360 GFLOPS

-

Board Design

25W

TDP

108W

200 W

Suggested PSU

300 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

G98

GPU Name

Juniper

-

GPU Variant

Juniper XT (215-0754013)

Tesla

Architecture

TeraScale 2

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

0.21 billion

Transistors

1.04 billion

86 mm²

Die Size

166 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

5.0

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