AMD Radeon RX 6900 XTX vs AMD Radeon RX 7900 GRE

VS

AMD Radeon RX 6900 XTX

AMD Radeon RX 7900 GRE

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 16GB VRAM Radeon RX 7900 GRE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XTX 's Advantages

Boost Clock has increased by 8% (2435MHz vs 2245MHz)

AMD Radeon RX 7900 GRE 's Advantages

Lower TDP (260W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX

24.93 TFLOPS

Radeon RX 7900 GRE +84%

45.98 TFLOPS

Radeon RX 6900 XTX

VS

Radeon RX 7900 GRE

Graphics Card

Unknown

Release Date

Jul 2023

Navi II

Generation

Navi III

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

2075 MHz

Base Clock

1287 MHz

2435 MHz

Boost Clock

2245 MHz

2250 MHz

Memory Clock

2250 MHz

Memory

16GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

576.0GB/s

Render Config

80

Compute Units

80

-

5120

Shading Units

5120

320

TMUs

320

128

ROPs

160

-

80

RT Cores

80

128 KB per Array

L1 Cache

256 KB per Array

4 MB

L2 Cache

6 MB

128 MB

L3 Cache

64 MB

Theoretical Performance

311.7 GPixel/s

Pixel Rate

359.2 GPixel/s

779.2 GTexel/s

Texture Rate

718.4 GTexel/s

49.87 TFLOPS

FP16 (half)

91.96 TFLOPS

24.93 TFLOPS

FP32 (float)

45.98 TFLOPS

1.558 TFLOPS

FP64 (double)

1437 GFLOPS

Board Design

330W

TDP

260W

700 W

Suggested PSU

600 W

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

Outputs

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

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Navi 21

GPU Name

Navi 31

Navi 21 XTXH (215-121000247)

GPU Variant

Navi 31 XL (215-145000206)

RDNA 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

7 nm

Process Size

5 nm

26.8 billion

Transistors

57.7 billion

520 mm²

Die Size

529 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.3

Vulkan

1.3

-

6.5

Shader Model

6.7

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