AMD Radeon HD 7850 vs NVIDIA GeForce 8400 GS PCI Rev. 2

VS

AMD Radeon HD 7850

NVIDIA GeForce 8400 GS PCI Rev. 2

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

AMD Radeon HD 7850 's Advantages

Released 4 years and 11 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 8.000GB/s)

1008 additional rendering cores

NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages

Lower TDP (40W vs 130W)

Score

Benchmark

FP32 (float)

Radeon HD 7850 +4415%

1.761 TFLOPS

GeForce 8400 GS PCI Rev. 2

0.039 TFLOPS

Radeon HD 7850

VS

GeForce 8400 GS PCI Rev. 2

Graphics Card

Mar 2012

Release Date

Apr 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

-

1200 MHz

Memory Clock

500 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

8.000GB/s

Render Config

16

Compute Units

-

SM Count

2

1024

Shading Units

16

64

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

27.52 GPixel/s

Pixel Rate

2.080 GPixel/s

55.04 GTexel/s

Texture Rate

4.160 GTexel/s

-

1.761 TFLOPS

FP32 (float)

39.36 GFLOPS

110.1 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

40W

300 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 Processor

Pitcairn

GPU Name

GT218

Pitcairn PRO (215-0828062)

GPU Variant

-

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.26 billion

212 mm²

Die Size

57 mm²

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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