AMD Radeon R9 Nano vs NVIDIA GeForce GT 640

VS

AMD Radeon R9 Nano

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 Nano and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 Nano 's Advantages

Released 3 years and 2 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 28.51GB/s)

3712 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 175W)

Score

Benchmark

FP32 (float)

Radeon R9 Nano +1082%

8.192 TFLOPS

GeForce GT 640

0.693 TFLOPS

Radeon R9 Nano

VS

GeForce GT 640

Graphics Card

Aug 2015

Release Date

Jun 2012

Pirate Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

500 MHz

Memory Clock

891 MHz

Memory

4GB

Memory Size

2GB

HBM

Memory Type

DDR3

4096bit

Memory Bus

128bit

512.0GB/s

Bandwidth

28.51GB/s

Render Config

64

Compute Units

-

4096

Shading Units

384

256

TMUs

32

64

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

7.216 GPixel/s

256.0 GTexel/s

Texture Rate

28.86 GTexel/s

8.192 TFLOPS

FP16 (half)

-

8.192 TFLOPS

FP32 (float)

692.7 GFLOPS

512.0 GFLOPS

FP64 (double)

28.86 GFLOPS

Board Design

175W

TDP

65W

450 W

Suggested PSU

250 W

1x HDMI 1.4a 3x DisplayPort 1.2

Outputs

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

1x 8-pin

Power Connectors

None

Graphics Processor

Fiji

GPU Name

GK107

Fiji XT CA (215-0862120)

GPU Variant

GK107-300-A2

GCN 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

8.9 billion

Transistors

1.27 billion

596 mm²

Die Size

118 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.3

Shader Model

5.1

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