NVIDIA GeForce GTX 645 OEM vs NVIDIA T400 4 GB

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA T400 4 GB

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 4GB VRAM T400 4 GB 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

NVIDIA T400 4 GB 's Advantages

Released 8 years and 1 months late

Boost Clock1425MHz

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (80.00GB/s vs 64.00GB/s)

Lower TDP (30W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

T400 4 GB +15%

1.094 TFLOPS

GeForce GTX 645 OEM

VS

T400 4 GB

Graphics Card

Apr 2013

Release Date

May 2021

GeForce 600

Generation

Quadro

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

420 MHz

-

Boost Clock

1425 MHz

1000 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

80.00GB/s

Render Config

-

SM Count

6

576

Shading Units

384

48

TMUs

24

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

22.80 GPixel/s

39.55 GTexel/s

Texture Rate

34.20 GTexel/s

-

FP16 (half)

2.189 TFLOPS

949.2 GFLOPS

FP32 (float)

1094 GFLOPS

39.55 GFLOPS

FP64 (double)

34.20 GFLOPS

Board Design

65W

TDP

30W

250 W

Suggested PSU

200 W

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

Outputs

3x mini-DisplayPort 1.4a

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

TU117

GK106-200-A1

GPU Variant

-

Kepler

Architecture

Turing

TSMC

Foundry

TSMC

28 nm

Process Size

12 nm

2.54 billion

Transistors

4.7 billion

221 mm²

Die Size

200 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

7.5

5.1

Shader Model

6.6

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