NVIDIA GeForce GTS 450 vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce GTS 450

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTS 450 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTS 450 's Advantages

Larger VRAM bandwidth (57.73GB/s vs 28.51GB/s)

NVIDIA GeForce GT 640 's Advantages

Released 1 years and 9 months late

More VRAM (2GB vs 1024GB)

192 additional rendering cores

Lower TDP (65W vs 106W)

Score

Benchmark

FP32 (float)

GeForce GTS 450

0.601 TFLOPS

GeForce GT 640 +15%

0.693 TFLOPS

GeForce GTS 450

VS

GeForce GT 640

Graphics Card

Sep 2010

Release Date

Jun 2012

GeForce 400

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

902 MHz

Memory Clock

891 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

57.73GB/s

Bandwidth

28.51GB/s

Render Config

-

4

SM Count

-

192

Shading Units

384

32

TMUs

32

16

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

6.264 GPixel/s

Pixel Rate

7.216 GPixel/s

25.06 GTexel/s

Texture Rate

28.86 GTexel/s

-

601.3 GFLOPS

FP32 (float)

692.7 GFLOPS

50.11 GFLOPS

FP64 (double)

28.86 GFLOPS

Board Design

106W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

GF106

GPU Name

GK107

GF106-250-KA-A1

GPU Variant

GK107-300-A2

Fermi

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

1.27 billion

238 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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