MSI RTX 5090 LIGHTNING Z vs PowerColor Red Devil RX 6900 XT Ultimate

Comparison of MSI RTX 5090 LIGHTNING Z with 32 GB GDDR7 and 21,760 cores vs PowerColor Red Devil RX 6900 XT Ultimate with 16 GB GDDR6 and 5,120 cores.

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Performance Rating

MSI RTX 5090 LIGHTNING Z outperforms PowerColor Red Devil RX 6900 XT Ultimate by 261.33% 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 Red Devil RX 6900 XT Ultimate

13.1

PowerColor Red Devil RX 6900 XT Ultimate

13.1

Contents:

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

Memory

Memory Size

🔥 +100% 32 ГБ
16 GB

Memory Type

GDDR7 GDDR6

Memory Bandwidth

🔥 1.79 TB/s
512.0 GB/s

Memory Bus Width

512 бит 256 бит

ML Performance

FP16 (Half Precision)

🔥 +139% 118.8 TFLOPS
49.66 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

🔥 +378% 118.8 TFLOPS
24.83 TFLOPS

FP64 (Double Precision)

🔥 +20% 1.856 TFLOPS
1.552 TFLOPS

CUDA Cores

🔥 +325% 21,760
5,120

RT Cores

🔥 +112% 170
80

Architecture & Compatibility

GPU Architecture

Blackwell 2.0 RDNA 2.0

SM (Streaming Multiprocessor)

🔥 170
No

PCIe Version

PCIe 5.0 x16 PCIe 4.0 x16

ML Software Support

CUDA Version

12.0 No

Clocks & Performance

Base Clock

2,017
🔥 +2% 2,050

Boost Clock

🔥 +13% 2,730
2,425

Memory Clock

1,750
🔥 +14% 2,000

Power Consumption

Recommended PSU

1400 W
🔥 -50% 700 W

Power Connector

🔥 2x 16-pin
3x 8-pin

TDP/TGP

1000 W
🔥 -70% 300 W

Rendering

Texture Units (TMU)

🔥 +112% 680
320

ROP

🔥 +112% 170
80

L2 Cache

🔥 +2,300% 96 MB
4 MB

Additional

Slots

Triple-slot Triple-slot

Release Date

Jan. 6, 2026 April 15, 2021

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
2x DisplayPort 1.4a
1x USB Type-C

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