NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon R7 240 OEM

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon R7 240 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 2GB VRAM Radeon R7 240 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

Larger VRAM bandwidth (38.40GB/s vs 28.80GB/s)

AMD Radeon R7 240 OEM 's Advantages

Released 1 years and 7 months late

Boost Clock780MHz

More VRAM (2GB vs 1536GB)

176 additional rendering cores

Lower TDP (50W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon R7 240 OEM +20%

0.499 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon R7 240 OEM

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 x8

Clock Speeds

-

Base Clock

730 MHz

-

Boost Clock

780 MHz

800 MHz

Memory Clock

900 MHz

Memory

1536MB

Memory Size

2GB

DDR3

Memory Type

DDR3

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

28.80GB/s

Render Config

-

Compute Units

5

3

SM Count

-

144

Shading Units

320

24

TMUs

20

24

ROPs

8

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

6.240 GPixel/s

17.28 GTexel/s

Texture Rate

15.60 GTexel/s

-

414.7 GFLOPS

FP32 (float)

499.2 GFLOPS

34.56 GFLOPS

FP64 (double)

31.20 GFLOPS

Board Design

75W

TDP

50W

250 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

Oland

GF116-150-A1

GPU Variant

-

Fermi 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

0.95 billion

238 mm²

Die Size

77 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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