MSI RTX 5090 LIGHTNING Z vs PowerColor Hellhound RX 6650 XT

Comparison of MSI RTX 5090 LIGHTNING Z with 32 GB GDDR7 and 21,760 cores vs PowerColor Hellhound RX 6650 XT with 8 GB GDDR6 and 2,048 cores.

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Performance Rating

MSI RTX 5090 LIGHTNING Z outperforms PowerColor Hellhound RX 6650 XT by 658.68% in the overall GPU ARK performance rating

A100 A100
H200 H200
MI325X MI325X

MSI RTX 5090 LIGHTNING Z

47.2

MSI RTX 5090 LIGHTNING Z

47.2
RX 7900 XTX RX 7900 XTX
MI250 MI250
Instinct MI300X Instinct MI300X

PowerColor Hellhound RX 6650 XT

6.2

PowerColor Hellhound RX 6650 XT

6.2

Contents:

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

Memory

Memory Size

🔥 +300% 32 ГБ
8 GB

Memory Type

GDDR7 GDDR6

Memory Bandwidth

🔥 1.79 TB/s
280.3 GB/s

Memory Bus Width

512 бит 128 бит

ML Performance

FP16 (Half Precision)

🔥 +439% 118.8 TFLOPS
22.03 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

🔥 +979% 118.8 TFLOPS
11.01 TFLOPS

FP64 (Double Precision)

🔥 +170% 1.856 TFLOPS
0.6884 TFLOPS

CUDA Cores

🔥 +962% 21,760
2,048

RT Cores

🔥 +431% 170
32

Architecture & Compatibility

GPU Architecture

Blackwell 2.0 RDNA 2.0

SM (Streaming Multiprocessor)

🔥 170
No

PCIe Version

PCIe 5.0 x16 PCIe 4.0 x8

ML Software Support

CUDA Version

12.0 No

Clocks & Performance

Base Clock

2,017
🔥 +7% 2,153

Boost Clock

🔥 +2% 2,730
2,689

Memory Clock

1,750
🔥 +25% 2,190

Power Consumption

Recommended PSU

1400 W
🔥 -68% 450 W

Power Connector

🔥 +100% 2x 16-pin
1x 8-pin

TDP/TGP

1000 W
🔥 -82% 176 W

Rendering

Texture Units (TMU)

🔥 +431% 680
128

ROP

🔥 +431% 170
32

L2 Cache

🔥 +4,700% 96 MB
2 MB

Additional

Slots

Triple-slot Dual-slot

Release Date

Jan. 6, 2026 May 10, 2022

Display Outputs

1x HDMI 2.1b
3x DisplayPort 2.1b

1x HDMI 2.1b
3x DisplayPort 2.1b
1x USB Type-C
1x HDMI 2.1
3x DisplayPort 1.4a

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