NVIDIA GeForce GT 645 OEM vs AMD Radeon R5 340X OEM

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon R5 340X OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 2GB VRAM Radeon R5 340X OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Larger VRAM bandwidth (91.87GB/s vs 16.00GB/s)

AMD Radeon R5 340X OEM 's Advantages

Released 3 years and 1 months late

More VRAM (2GB vs 1024GB)

96 additional rendering cores

Lower TDP (65W vs 102W)

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM +29%

0.894 TFLOPS

Radeon R5 340X OEM

0.691 TFLOPS

GeForce GT 645 OEM

VS

Radeon R5 340X OEM

Graphics Card

Apr 2012

Release Date

May 2015

GeForce 600

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

957 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

64bit

91.87GB/s

Bandwidth

16.00GB/s

Render Config

-

Compute Units

6

SM Count

-

288

Shading Units

384

48

TMUs

24

ROPs

8

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

7.200 GPixel/s

37.25 GTexel/s

Texture Rate

21.60 GTexel/s

-

894.0 GFLOPS

FP32 (float)

691.2 GFLOPS

74.50 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

102W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x DisplayPort 1.2

-

Power Connectors

None

Graphics Processor

GF114

GPU Name

Oland

-

GPU Variant

Oland XT (215-0837000)

Fermi 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.95 billion

Transistors

0.95 billion

332 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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