GPU Comparison

A

AMD

RADEON

AMD Radeon RX 6800 XT

CORE STATE Navi 21

VRAM 16 GB

CLOCK SPEED 2250 MHz

TDP 300 W

BUS WIDTH 256 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2020

VS

NVIDIA

GEFORCE

RTX A400

CORE STATE GA107

VRAM 4 GB

CLOCK SPEED 1762 MHz

TDP 50 W

BUS WIDTH 64 bit

ARCHITECTURE Ampere

nm

PROCESS 8 nm

LAUNCH DATE 2024

PERFORMANCE BENCHMARKS

3dmark_3dmark_steel_nomad_dx12

3,689

N/A

geekbench_metal

199,366

N/A

geekbench_opencl

154,506

22,844

geekbench_vulkan

152,200

21,769

passmark_directx_10

155

N/A

passmark_directx_11

264

N/A

passmark_directx_12

100

N/A

passmark_directx_9

265

N/A

passmark_g2d

1,030

N/A

passmark_g3d

24,980

N/A

passmark_gpu_compute

13,245

N/A

DETAILED SPECIFICATIONS

SPECIFICATION

RX 6800 XT

RTX A400

Core Specs

Shading Units

4,608

768 -83.3%

Shaders

4,608

768 -83.3%

TMUs

288

24 -91.7%

ROPs

128

16 -87.5%

Compute Units

72

—

SM Count

—

6

Clocks

Base Clock

1825 MHz

1417 MHz

Boost Clock

2250 MHz

1762 MHz

Game Clock

2015 MHz

—

Memory Clock

2000 MHz 16 Gbps effective

1500 MHz 12 Gbps effective

Memory

Memory Size

16 GB

4 GB

VRAM (MB)

16,384

4,096 -75.0%

Memory Type

GDDR6

GDDR6

Memory Bus

256 bit

64 bit

Bandwidth

512.0 GB/s

96.00 GB/s

Cache

L1 Cache

128 KB per Array

128 KB (per SM)

L2 Cache

4 MB

2 MB

L3 Cache

128 MB

—

L0 Cache

32 KB per WGP

—

Performance

Pixel Rate

288.0 GPixel/s

28.19 GPixel/s

Texture Rate

648.0 GTexel/s

42.29 GTexel/s

FP32 (TFLOPS)

20.74 TFLOPS

2.706 TFLOPS

FP64 (TFLOPS)

1,296.0 GFLOPS (1:16)

42.29 GFLOPS (1:64)

FP16 (TFLOPS)

41.47 TFLOPS (2:1)

2.706 TFLOPS (1:1)

AI/RT

RT Cores

72

6 -91.7%

Tensor Cores

—

24

Power

TDP

300 W

50 W

TDP (W)

300

50 -83.3%

Suggested PSU

700 W

250 W

Power Connectors

2x 8-pin

None

Architecture

Architecture

RDNA 2.0

Ampere

GPU Name

Navi 21

GA107

Generation

Navi II (RX 6000)

Workstation Ampere (Ax000)

Process Size

7 nm

8 nm

Transistors

26,800 million

8,700 million

Die Size

520 mm²

200 mm²

Foundry

TSMC

Samsung

Density

51.5M / mm²

43.5M / mm²

API Support

DirectX

12 Ultimate (12_2)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.4

1.4

OpenCL

2.1

3.0

CUDA

—

8.6

Shader Model

6.8

6.8

Physical

Slot Width

Dual-slot

Single-slot

Length

267 mm 10.5 inches

163 mm 6.4 inches

Height

120 mm 4.7 inches

69 mm 2.7 inches

Outputs

1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C

4x mini-DisplayPort 1.4a

Bus Interface

PCIe 4.0 x16

PCIe 4.0 x8

Other

Launch Price

649 USD

—

Production

End-of-life

Active

Predecessor

Navi

Quadro Turing

Successor

Navi III

Workstation Ada

View Radeon RX 6800 XT Details View RTX A400 Details