NVIDIA GeForce GTX 645 OEM vs AMD Radeon R7 340 OEM

VS

NVIDIA GeForce GTX 645 OEM

AMD Radeon R7 340 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 2GB VRAM Radeon R7 340 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

192 additional rendering cores

AMD Radeon R7 340 OEM 's Advantages

Released 2 years and 1 months late

Boost Clock780MHz

More VRAM (2GB vs 1024GB)

Lower TDP (50W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM +58%

0.949 TFLOPS

Radeon R7 340 OEM

0.599 TFLOPS

GeForce GTX 645 OEM

VS

Radeon R7 340 OEM

Graphics Card

Apr 2013

Release Date

May 2015

GeForce 600

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

730 MHz

-

Boost Clock

780 MHz

1000 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

64.00GB/s

Render Config

-

Compute Units

6

-

576

Shading Units

384

48

TMUs

24

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

6.240 GPixel/s

39.55 GTexel/s

Texture Rate

18.72 GTexel/s

-

949.2 GFLOPS

FP32 (float)

599.0 GFLOPS

39.55 GFLOPS

FP64 (double)

37.44 GFLOPS

Board Design

65W

TDP

50W

250 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

Oland

GK106-200-A1

GPU Variant

-

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

0.95 billion

221 mm²

Die Size

77 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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