NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 340 OEM

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GT 340 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM GeForce GT 340 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 2 years and 4 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.51GB/s vs 27.20GB/s)

288 additional rendering cores

Lower TDP (65W vs 69W)

Score

Benchmark

FP32 (float)

GeForce GT 640 +169%

0.693 TFLOPS

GeForce GT 340 OEM

0.257 TFLOPS

GeForce GT 640

VS

GeForce GT 340 OEM

Graphics Card

Jun 2012

Release Date

Feb 2010

GeForce 600

Generation

GeForce 300

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

850 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

27.20GB/s

Render Config

-

SM Count

12

384

Shading Units

96

32

TMUs

32

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

4.400 GPixel/s

28.86 GTexel/s

Texture Rate

17.60 GTexel/s

-

692.7 GFLOPS

FP32 (float)

257.3 GFLOPS

28.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

69W

250 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1x VGA

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

GT215

GK107-300-A2

GPU Variant

GT215-301-A3

Kepler

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

0.727 billion

118 mm²

Die Size

144 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.2

5.1

Shader Model

4.1

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