NVIDIA GeForce GT 340 OEM vs NVIDIA GeForce GTX 645 OEM

VS

NVIDIA GeForce GT 340 OEM

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 340 OEM and 1024MB VRAM GeForce GTX 645 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

Released 3 years and 2 months late

Larger VRAM bandwidth (64.00GB/s vs 27.20GB/s)

480 additional rendering cores

Lower TDP (65W vs 69W)

Score

Benchmark

FP32 (float)

GeForce GT 340 OEM

0.257 TFLOPS

GeForce GTX 645 OEM +269%

0.949 TFLOPS

GeForce GT 340 OEM

VS

GeForce GTX 645 OEM

Graphics Card

Feb 2010

Release Date

Apr 2013

GeForce 300

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

27.20GB/s

Bandwidth

64.00GB/s

Render Config

-

12

SM Count

-

96

Shading Units

576

32

TMUs

48

8

ROPs

16

-

L1 Cache

16 KB (per SMX)

64 KB

L2 Cache

256 KB

-

Theoretical Performance

4.400 GPixel/s

Pixel Rate

9.888 GPixel/s

17.60 GTexel/s

Texture Rate

39.55 GTexel/s

-

257.3 GFLOPS

FP32 (float)

949.2 GFLOPS

-

FP64 (double)

39.55 GFLOPS

Board Design

69W

TDP

65W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1x VGA

Outputs

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

None

Power Connectors

None

Graphics Processor

GT215

GPU Name

GK106

GT215-301-A3

GPU Variant

GK106-200-A1

Tesla 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.727 billion

Transistors

2.54 billion

144 mm²

Die Size

221 mm²

Graphics Features

11.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

1.2

CUDA

3.0

4.1

Shader Model

5.1

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