NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon R9 290X2

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon R9 290X2

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 4GB VRAM Radeon R9 290X2 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 580W)

AMD Radeon R9 290X2 's Advantages

Released 2 years and 2 months late

More VRAM (4GB vs 1536GB)

Larger VRAM bandwidth (345.6GB/s vs 38.40GB/s)

2672 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon R9 290X2 +1257%

5.632 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon R9 290X2

Graphics Card

Apr 2012

Release Date

Jun 2014

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1350 MHz

Memory

1536MB

Memory Size

4GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

512bit

38.40GB/s

Bandwidth

345.6GB/s

Render Config

-

Compute Units

44

3

SM Count

-

144

Shading Units

2816

24

TMUs

176

24

ROPs

64

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

1024 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

64.00 GPixel/s

17.28 GTexel/s

Texture Rate

176.0 GTexel/s

-

414.7 GFLOPS

FP32 (float)

5.632 TFLOPS

34.56 GFLOPS

FP64 (double)

704.0 GFLOPS

Board Design

75W

TDP

580W

250 W

Suggested PSU

950 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

4x 8-pin

Graphics Processor

GF116

GPU Name

Hawaii

GF116-150-A1

GPU Variant

Hawaii XT (215-0852000)

Fermi 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

6.2 billion

238 mm²

Die Size

438 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

6.3

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