NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon HD 8950 OEM

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon HD 8950 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 3GB VRAM Radeon HD 8950 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

Lower TDP (75W vs 200W)

AMD Radeon HD 8950 OEM 's Advantages

Released 9 months late

Boost Clock925MHz

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (240.0GB/s vs 38.40GB/s)

1648 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon HD 8950 OEM +698%

3.315 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon HD 8950 OEM

Graphics Card

Apr 2012

Release Date

Jan 2013

GeForce 600

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

925 MHz

800 MHz

Memory Clock

1250 MHz

Memory

1536MB

Memory Size

3GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

384bit

38.40GB/s

Bandwidth

240.0GB/s

Render Config

-

Compute Units

28

3

SM Count

-

144

Shading Units

1792

24

TMUs

112

24

ROPs

32

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

768 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

29.60 GPixel/s

17.28 GTexel/s

Texture Rate

103.6 GTexel/s

-

414.7 GFLOPS

FP32 (float)

3.315 TFLOPS

34.56 GFLOPS

FP64 (double)

828.8 GFLOPS

Board Design

75W

TDP

200W

250 W

Suggested PSU

550 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

2x 6-pin

Graphics Processor

GF116

GPU Name

Tahiti

GF116-150-A1

GPU Variant

Tahiti PRO (215-0821056)

Fermi 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

4.313 billion

238 mm²

Die Size

352 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

5.1

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