ASRock RX 6650 XT Phantom Gaming D OC vs NVIDIA B300

Comparison of ASRock RX 6650 XT Phantom Gaming D OC with 8 GB GDDR6 and 2,048 cores vs NVIDIA B300 with 144 GB HBM3e and 18,944 cores.

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Performance Rating

NVIDIA B300 outperforms ASRock RX 6650 XT Phantom Gaming D OC by 1,054.57% in the overall GPU ARK performance rating

A100 A100
H200 H200
MI325X MI325X

ASRock RX 6650 XT Phantom Gaming D OC

6.2

ASRock RX 6650 XT Phantom Gaming D OC

6.2
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

8 GB
🔥 +1,700% 144 ГБ ×2 (288 ГБ)

Memory Type

GDDR6 HBM3e

Memory Bandwidth

280.3 GB/s
🔥 4.10 TB/s ×2 (8.2 TB/s)

Memory Bus Width

128 бит 4,096 бит ×2 (8192 бит)

ML Performance

FP16 (Half Precision)

🔥 +1,692% 22.07 TFLOPS
1.2318 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

11.03 TFLOPS
🔥 +598% 76.99 TFLOPS

FP64 (Double Precision)

0.6897 TFLOPS
🔥 +74% 1.2029 TFLOPS

CUDA Cores

2,048
🔥 +825% 18,944 ×2 (37888)

RT Cores

🔥 32
No

Architecture & Compatibility

GPU Architecture

RDNA 2.0 Blackwell Ultra

SM (Streaming Multiprocessor)

No
🔥 148

PCIe Version

PCIe 4.0 x8 PCIe 5.0 x16

ML Software Support

CUDA Version

No 10.3

Clocks & Performance

Base Clock

🔥 +32% 2,192
1,665

Boost Clock

🔥 +33% 2,694
2,032

Memory Clock

🔥 +10% 2,190
2,000

Power Consumption

Recommended PSU

🔥 -75% 450 W
1800 W

Power Connector

1x 8-pin No

TDP/TGP

🔥 -87% 176 W
1400 W

Rendering

Texture Units (TMU)

128
🔥 +362% 592 ×2 (1184)

ROP

🔥 32
No

L2 Cache

2 MB
🔥 +2,400% 50 MB

Additional

Slots

Dual-slot
🔥 SXM Module

Release Date

May 10, 2022 Sept. 11, 2025

Display Outputs

1x HDMI 2.1
3x DisplayPort 1.4a
No outputs

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