NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon R9 270

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon R9 270

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 2GB VRAM Radeon R9 270 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 150W)

AMD Radeon R9 270 's Advantages

Released 1 years and 7 months late

Boost Clock925MHz

More VRAM (2GB vs 1536GB)

Larger VRAM bandwidth (179.2GB/s vs 38.40GB/s)

1136 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon R9 270 +470%

2.368 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon R9 270

Graphics Card

Apr 2012

Release Date

Nov 2013

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

925 MHz

800 MHz

Memory Clock

1400 MHz

Memory

1536MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

256bit

38.40GB/s

Bandwidth

179.2GB/s

Render Config

-

Compute Units

20

3

SM Count

-

144

Shading Units

1280

24

TMUs

80

24

ROPs

32

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

29.60 GPixel/s

17.28 GTexel/s

Texture Rate

74.00 GTexel/s

-

414.7 GFLOPS

FP32 (float)

2.368 TFLOPS

34.56 GFLOPS

FP64 (double)

148.0 GFLOPS

Board Design

75W

TDP

150W

250 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

GF116

GPU Name

Curacao

GF116-150-A1

GPU Variant

Curacao PRO (215-0848000)

Fermi 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

2.8 billion

238 mm²

Die Size

212 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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