NVIDIA B200 SXM 192 GB vs NVIDIA GeForce GTX 645 OEM

VS

NVIDIA B200 SXM 192 GB

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 192GB VRAM B200 SXM 192 GB 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 B200 SXM 192 GB 's Advantages

Released 10 years and 9 months late

Boost Clock1837MHz

More VRAM (192GB vs 1024GB)

Larger VRAM bandwidth (4100GB/s vs 64.00GB/s)

16320 additional rendering cores

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 1000W)

Score

Benchmark

FP32 (float)

B200 SXM 192 GB +6441%

62.08 TFLOPS

GeForce GTX 645 OEM

0.949 TFLOPS

B200 SXM 192 GB

VS

GeForce GTX 645 OEM

Graphics Card

Jan 2024

Release Date

Apr 2013

Tesla Blackwell

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 5.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1665 MHz

Base Clock

-

1837 MHz

Boost Clock

-

2000 MHz

Memory Clock

1000 MHz

Memory

192GB

Memory Size

1024MB

HBM3e

Memory Type

GDDR5

4096bit

Memory Bus

128bit

4100GB/s

Bandwidth

64.00GB/s

Render Config

-

132

SM Count

-

16896

Shading Units

576

528

TMUs

48

24

ROPs

16

528

Tensor Cores

-

256 KB (per SM)

L1 Cache

16 KB (per SMX)

50 MB

L2 Cache

256 KB

-

Theoretical Performance

44.09 GPixel/s

Pixel Rate

9.888 GPixel/s

969.9 GTexel/s

Texture Rate

39.55 GTexel/s

248.3 TFLOPS

FP16 (half)

-

62.08 TFLOPS

FP32 (float)

949.2 GFLOPS

31.04 TFLOPS

FP64 (double)

39.55 GFLOPS

Board Design

1000W

TDP

65W

1400 W

Suggested PSU

250 W

No outputs

Outputs

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

-

Power Connectors

None

Graphics Processor

GB100

GPU Name

GK106

-

GPU Variant

GK106-200-A1

Blackwell

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

208 billion

Transistors

2.54 billion

Unknown

Die Size

221 mm²

Graphics Features

N/A

DirectX

12 (11_0)

N/A

OpenGL

4.6

3.0

OpenCL

3.0

N/A

Vulkan

1.1

9.0

CUDA

3.0

N/A

Shader Model

5.1

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