NVIDIA B300 vs OCPC RTX 3090

Comparison of NVIDIA B300 with 144 GB HBM3e and 18,944 cores vs OCPC RTX 3090 with 24 GB GDDR6X and 10,496 cores.

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Performance Rating

NVIDIA B300 outperforms OCPC RTX 3090 by 262.0% in the overall GPU ARK performance rating

A100 A100
H200 H200
MI325X MI325X

NVIDIA B300

71.9

NVIDIA B300

71.9
RX 7900 XTX RX 7900 XTX
MI250 MI250
Instinct MI300X Instinct MI300X

OCPC RTX 3090

19.9

OCPC RTX 3090

19.9

Contents:

Memory ML Performance Compute Power Architecture & Compatibility ML Software Support Clocks & Performance Power Consumption Rendering Additional

Memory

Memory Size

🔥 +500% 144 ГБ ×2 (288 ГБ)
24 GB

Memory Type

HBM3e GDDR6X

Memory Bandwidth

🔥 4.10 TB/s ×2 (8.2 TB/s)
936.2 GB/s

Memory Bus Width

4,096 бит ×2 (8192 бит) 384 бит

ML Performance

FP16 (Half Precision)

1.2318 TFLOPS
🔥 +2,788% 35.58 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

🔥 +116% 76.99 TFLOPS
35.58 TFLOPS

FP64 (Double Precision)

🔥 +116% 1.2029 TFLOPS
0.556 TFLOPS

CUDA Cores

🔥 +80% 18,944 ×2 (37888)
10,496

RT Cores

No
🔥 82

Architecture & Compatibility

GPU Architecture

Blackwell Ultra Ampere

SM (Streaming Multiprocessor)

🔥 +80% 148
82

PCIe Version

PCIe 5.0 x16 PCIe 4.0 x16

ML Software Support

CUDA Version

🔥 10.3
8.6

Clocks & Performance

Base Clock

🔥 +19% 1,665
1,395

Boost Clock

🔥 +20% 2,032
1,695

Memory Clock

🔥 +64% 2,000
1,219

Power Consumption

Recommended PSU

1800 W
🔥 -58% 750 W

Power Connector

No 2x 8-pin

TDP/TGP

1400 W
🔥 -75% 350 W

Rendering

Texture Units (TMU)

🔥 +80% 592 ×2 (1184)
328

ROP

No
🔥 82

L2 Cache

50 MB
🔥 6 MB

Additional

Slots

🔥 SXM Module
Dual-slot

Release Date

Sept. 11, 2025 Sept. 1, 2020

Display Outputs

No outputs
1x HDMI 2.1
3x DisplayPort 1.4a

Renting is cheaper than buying