NVIDIA GeForce 9400 GT vs NVIDIA GeForce GT 640 OEM

VS

NVIDIA GeForce 9400 GT

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 128MB VRAM GeForce 9400 GT and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM 's Advantages

Released 3 years and 8 months late

More VRAM (2GB vs 128GB)

Larger VRAM bandwidth (28.51GB/s vs 9.600GB/s)

368 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 9400 GT

0.029 TFLOPS

GeForce GT 640 OEM +2010%

0.612 TFLOPS

GeForce 9400 GT

VS

GeForce GT 640 OEM

Graphics Card

Aug 2008

Release Date

Apr 2012

GeForce 9

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

600 MHz

Memory Clock

891 MHz

Memory

128MB

Memory Size

2GB

DDR2

Memory Type

DDR3

64bit

Memory Bus

128bit

9.600GB/s

Bandwidth

28.51GB/s

Render Config

-

2

SM Count

-

16

Shading Units

384

8

TMUs

32

4

ROPs

16

-

L1 Cache

16 KB (per SMX)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

1.836 GPixel/s

Pixel Rate

6.376 GPixel/s

3.672 GTexel/s

Texture Rate

25.50 GTexel/s

-

29.38 GFLOPS

FP32 (float)

612.1 GFLOPS

-

FP64 (double)

25.50 GFLOPS

Board Design

50W

TDP

50W

250 W

Suggested PSU

250 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

None

Graphics Processor

G86

GPU Name

GK107

-

GPU Variant

GK107-320-A2

Tesla

Architecture

Kepler

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.21 billion

Transistors

1.27 billion

127 mm²

Die Size

118 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

CUDA

3.0

4.0

Shader Model

5.1

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