AMD Radeon RX 6900 XT vs AMD Radeon R7 350 640SP

VS

AMD Radeon RX 6900 XT

AMD Radeon R7 350 640SP

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 2GB VRAM Radeon R7 350 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XT 's Advantages

Released 1 years and 9 months late

Boost Clock2250MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 72.00GB/s)

4480 additional rendering cores

AMD Radeon R7 350 640SP 's Advantages

Lower TDP (55W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XT +1845%

23.04 TFLOPS

Radeon R7 350 640SP

1.184 TFLOPS

Radeon RX 6900 XT

VS

Radeon R7 350 640SP

Graphics Card

Oct 2020

Release Date

Jan 2019

Navi II

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2250 MHz

Boost Clock

-

2000 MHz

Memory Clock

1125 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

512.0GB/s

Bandwidth

72.00GB/s

Render Config

80

Compute Units

10

-

5120

Shading Units

640

320

TMUs

40

128

ROPs

16

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

14.80 GPixel/s

720.0 GTexel/s

Texture Rate

37.00 GTexel/s

46.08 TFLOPS

FP16 (half)

-

23.04 TFLOPS

FP32 (float)

1184 GFLOPS

1440 GFLOPS

FP64 (double)

74.00 GFLOPS

Board Design

300W

TDP

55W

700 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Cape Verde

Navi 21 XTX (215-121000167)

GPU Variant

Cape Verde XT

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

1.5 billion

520 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

6.5

Shader Model

5.1

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