NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon HD 8450 OEM

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon HD 8450 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 1024MB VRAM Radeon HD 8450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (38.40GB/s vs 10.67GB/s)

AMD Radeon HD 8450 OEM 's Advantages

Released 9 months late

16 additional rendering cores

Lower TDP (18W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand +107%

0.415 TFLOPS

Radeon HD 8450 OEM

0.2 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon HD 8450 OEM

Graphics Card

Apr 2012

Release Date

Jan 2013

GeForce 600

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

667 MHz

Memory

1536MB

Memory Size

1024MB

DDR3

Memory Type

DDR3

192bit

Memory Bus

64bit

38.40GB/s

Bandwidth

10.67GB/s

Render Config

-

Compute Units

2

3

SM Count

-

144

Shading Units

160

24

TMUs

8

24

ROPs

4

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

2.500 GPixel/s

17.28 GTexel/s

Texture Rate

5.000 GTexel/s

-

414.7 GFLOPS

FP32 (float)

200.0 GFLOPS

34.56 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

18W

250 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

Caicos

GF116-150-A1

GPU Variant

Caicos PRO-L

Fermi 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

0.37 billion

238 mm²

Die Size

67 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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