NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce 8400 GS Rev. 2

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce 8400 GS Rev. 2

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM GeForce 8400 GS Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 5 years and 4 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 6.400GB/s)

568 additional rendering cores

NVIDIA GeForce 8400 GS Rev. 2 's Advantages

Lower TDP (25W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM +4213%

0.949 TFLOPS

GeForce 8400 GS Rev. 2

0.022 TFLOPS

GeForce GTX 645 OEM

VS

GeForce 8400 GS Rev. 2

Graphics Card

Apr 2013

Release Date

Dec 2007

GeForce 600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

1

576

Shading Units

8

48

TMUs

4

16

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

2.268 GPixel/s

39.55 GTexel/s

Texture Rate

2.268 GTexel/s

-

949.2 GFLOPS

FP32 (float)

22.40 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

25W

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

G98

GK106-200-A1

GPU Variant

-

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

2.54 billion

Transistors

0.21 billion

221 mm²

Die Size

86 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.1

5.1

Shader Model

4.0

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