ASRock RX 6800 Phantom Gaming D OC vs NVIDIA B300

Comparison of ASRock RX 6800 Phantom Gaming D OC with 16 GB GDDR6 and 3,840 cores vs NVIDIA B300 with 144 GB HBM3e and 18,944 cores.

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Performance Rating

NVIDIA B300 outperforms ASRock RX 6800 Phantom Gaming D OC by 582.45% in the overall GPU ARK performance rating

A100 A100
H200 H200
MI325X MI325X

ASRock RX 6800 Phantom Gaming D OC

10.5

ASRock RX 6800 Phantom Gaming D OC

10.5
RX 7900 XTX RX 7900 XTX
MI250 MI250
Instinct MI300X Instinct MI300X

NVIDIA B300

71.9

NVIDIA B300

71.9

Contents:

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

Memory

Memory Size

16 GB
🔥 +800% 144 ГБ ×2 (288 ГБ)

Memory Type

GDDR6 HBM3e

Memory Bandwidth

512.0 GB/s
🔥 4.10 TB/s ×2 (8.2 TB/s)

Memory Bus Width

256 бит 4,096 бит ×2 (8192 бит)

ML Performance

FP16 (Half Precision)

🔥 +2,631% 33.64 TFLOPS
1.2318 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

16.82 TFLOPS
🔥 +358% 76.99 TFLOPS

FP64 (Double Precision)

1.0512 TFLOPS
🔥 +14% 1.2029 TFLOPS

CUDA Cores

3,840
🔥 +393% 18,944 ×2 (37888)

RT Cores

🔥 60
No

Architecture & Compatibility

GPU Architecture

RDNA 2.0 Blackwell Ultra

SM (Streaming Multiprocessor)

No
🔥 148

PCIe Version

PCIe 4.0 x16 PCIe 5.0 x16

ML Software Support

CUDA Version

No 10.3

Clocks & Performance

Base Clock

🔥 +11% 1,850
1,665

Boost Clock

🔥 +8% 2,190
2,032

Memory Clock

2,000 2,000

Power Consumption

Recommended PSU

🔥 -67% 600 W
1800 W

Power Connector

2x 8-pin No

TDP/TGP

🔥 -82% 250 W
1400 W

Rendering

Texture Units (TMU)

240
🔥 +147% 592 ×2 (1184)

ROP

🔥 60
No

L2 Cache

4 MB
🔥 +1,150% 50 MB

Additional

Slots

Triple-slot
🔥 SXM Module

Release Date

Oct. 28, 2020 Sept. 11, 2025

Display Outputs

1x HDMI 2.1
2x DisplayPort 1.4a
1x USB Type-C

1x HDMI 2.1
3x DisplayPort 1.4a
No outputs

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