NVIDIA GeForce GTX 645 OEM vs NVIDIA T400

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA T400

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 2GB VRAM T400 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 's Advantages

Released 8 years and 1 months late

Boost Clock1425MHz

More VRAM (2GB 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 +15%

1.094 TFLOPS

GeForce GTX 645 OEM

VS

T400

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

2GB

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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