GPU Comparison

A

AMD

RADEON

AMD Radeon RX 6800

CORE STATE Navi 21

VRAM 16 GB

CLOCK SPEED 2105 MHz

TDP 250 W

BUS WIDTH 256 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2020

VS

NVIDIA

GEFORCE

GeForce GTX 660 OEM

CORE STATE GK104

VRAM 1536 MB

CLOCK SPEED 888 MHz

TDP 130 W

BUS WIDTH 192 bit

ARCHITECTURE Kepler

nm

PROCESS 28 nm

LAUNCH DATE 2012

PERFORMANCE BENCHMARKS

3dmark_3dmark_steel_nomad_dx12

3,188

N/A

geekbench_metal

175,541

N/A

geekbench_opencl

24,559

N/A

geekbench_vulkan

130,531

N/A

passmark_directx_10

128

N/A

passmark_directx_11

214

N/A

passmark_directx_12

89

N/A

passmark_directx_9

257

N/A

passmark_g2d

990

N/A

passmark_g3d

22,067

N/A

passmark_gpu_compute

10,864

N/A

DETAILED SPECIFICATIONS

SPECIFICATION

RX 6800

GTX 660 OEM

Core Specs

Shading Units

3,840

1,152 -70.0%

Shaders

3,840

1,152 -70.0%

TMUs

240

96 -60.0%

ROPs

96

24 -75.0%

Compute Units

60

—

Clocks

Base Clock

1700 MHz

823 MHz

Boost Clock

2105 MHz

888 MHz

Game Clock

1815 MHz

—

Memory Clock

2000 MHz 16 Gbps effective

1400 MHz 5.6 Gbps effective

Memory

Memory Size

16 GB

1536 MB

VRAM (MB)

16,384

1,536 -90.6%

Memory Type

GDDR6

GDDR5

Memory Bus

256 bit

192 bit

Bandwidth

512.0 GB/s

134.4 GB/s

Cache

L1 Cache

128 KB per Array

16 KB (per SMX)

L2 Cache

4 MB

384 KB

L3 Cache

128 MB

—

L0 Cache

32 KB per WGP

—

Performance

Pixel Rate

202.1 GPixel/s

21.31 GPixel/s

Texture Rate

505.2 GTexel/s

85.25 GTexel/s

FP32 (TFLOPS)

16.17 TFLOPS

2.046 TFLOPS

FP64 (TFLOPS)

1,010.4 GFLOPS (1:16)

85.25 GFLOPS (1:24)

FP16 (TFLOPS)

32.33 TFLOPS (2:1)

—

AI/RT

RT Cores

60

—

Power

TDP

250 W

130 W

TDP (W)

250

130 -48.0%

Suggested PSU

600 W

300 W

Power Connectors

2x 8-pin

1x 6-pin

Architecture

Architecture

RDNA 2.0

Kepler

GPU Name

Navi 21

GK104

Generation

Navi II (RX 6000)

GeForce 600

Process Size

7 nm

28 nm

Transistors

26,800 million

3,540 million

Die Size

520 mm²

294 mm²

Foundry

TSMC

TSMC

Density

51.5M / mm²

12.0M / mm²

API Support

DirectX

12 Ultimate (12_2)

12 (11_0)

OpenGL

4.6

4.6

Vulkan

1.4

1.2.175

OpenCL

2.1

3.0

CUDA

—

3.0

Shader Model

6.8

6.5 (5.1)

Physical

Slot Width

Dual-slot

Dual-slot

Length

267 mm 10.5 inches

241 mm 9.5 inches

Height

120 mm 4.7 inches

—

Outputs

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

2x DVI1x HDMI 1.4a1x DisplayPort 1.2

Bus Interface

PCIe 4.0 x16

PCIe 3.0 x16

Other

Launch Price

579 USD

—

Production

End-of-life

End-of-life

Predecessor

Navi

GeForce 500

Successor

Navi III

GeForce 700

View Radeon RX 6800 Details View GeForce GTX 660 OEM Details