AMD Radeon RX 7900 GRE vs AMD Radeon RX 6900 XT

VS

AMD Radeon RX 7900 GRE AMD Radeon RX 6900 XT

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

Main Differences

AMD Radeon RX 7900 GRE 's Advantages

Released 2 years and 9 months late

Larger VRAM bandwidth (576.0GB/s vs 512.0GB/s)

Lower TDP (260W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Boost Clock has increased by 0% (2250MHz vs 2245MHz)

Score

Benchmark

FP32 (float)

Radeon RX 7900 GRE +99%

45.98 TFLOPS

Radeon RX 6900 XT

23.04 TFLOPS

3DMark Time Spy

Radeon RX 7900 GRE +6%

22161

Radeon RX 6900 XT

20902

Radeon RX 7900 GRE

VS

Radeon RX 6900 XT

Graphics Card

Jul 2023

Release Date

Oct 2020

Navi III

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1287 MHz

Base Clock

1825 MHz

2245 MHz

Boost Clock

2250 MHz

Memory Clock

2000 MHz

Memory

16GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

512.0GB/s

Render Config

-

SM Count

-

80

Compute Units

80

5120

Shading Units

5120

320

TMUs

320

160

ROPs

128

-

Tensor Cores

-

80

RT Cores

80

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

4 MB

Theoretical Performance

359.2 GPixel/s

Pixel Rate

288.0 GPixel/s

718.4 GTexel/s

Texture Rate

720.0 GTexel/s

91.96 TFLOPS

FP16 (half)

46.08 TFLOPS

45.98 TFLOPS

FP32 (float)

23.04 TFLOPS

1437 GFLOPS

FP64 (double)

1440 GFLOPS

Graphics Processor

Navi 31

GPU Name

Navi 21

Navi 31 XL

GPU Variant

Navi 21 XTX (215-121000167)

RDNA 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

7 nm

57.7 billion

Transistors

26.8 billion

529 mm²

Die Size

520 mm²

Board Design

260W

TDP

300W

600 W

Suggested PSU

700 W

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

Outputs

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

2x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.3

-

CUDA

-

6.7

Shader Model

6.5

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