GPU Comparison

A

AMD

RADEON

AMD Radeon HD 6850 X2

CORE STATE Barts

VRAM 2 GB

CLOCK SPEED —

TDP 254 W

BUS WIDTH 256 bit

ARCHITECTURE TeraScale 2

nm

PROCESS 40 nm

LAUNCH DATE 2011

VS

A

AMD

RADEON

Radeon RX 7900 XT

CORE STATE Navi 31

VRAM 20 GB

CLOCK SPEED 2394 MHz

TDP 300 W

BUS WIDTH 320 bit

ARCHITECTURE RDNA 3.0

nm

PROCESS 5 nm

LAUNCH DATE 2022

PERFORMANCE BENCHMARKS

geekbench_opencl

3,977

169,834

3dmark_3dmark_steel_nomad_dx12

N/A

5,623

geekbench_vulkan

N/A

160,119

passmark_directx_10

N/A

158

passmark_directx_11

N/A

340

passmark_directx_12

N/A

110

passmark_directx_9

N/A

322

passmark_g2d

N/A

1,232

passmark_g3d

N/A

29,009

passmark_gpu_compute

N/A

16,828

DETAILED SPECIFICATIONS

SPECIFICATION

HD 6850 X2

RX 7900 XT

Core Specs

Shading Units

960

5,376 +460.0%

Shaders

960

5,376 +460.0%

TMUs

48

336 +600.0%

ROPs

32

192 +500.0%

Compute Units

12

84 +600.0%

Clocks

Base Clock

—

1387 MHz

Boost Clock

—

2394 MHz

GPU Clock

800 MHz

—

Game Clock

—

2025 MHz

Shader Clock

—

2025 MHz

Memory Clock

1050 MHz 4.2 Gbps effective

2500 MHz 20 Gbps effective

Memory

Memory Size

2 GB

20 GB

VRAM (MB)

2,048

20,480 +900.0%

Memory Type

GDDR5

GDDR6

Memory Bus

256 bit

320 bit

Bandwidth

134.4 GB/s

800.0 GB/s

Cache

L1 Cache

8 KB (per CU)

256 KB per Array

L2 Cache

512 KB

6 MB

L3 Cache

—

80 MB

L0 Cache

—

64 KB per WGP

Performance

Pixel Rate

25.60 GPixel/s

459.6 GPixel/s

Texture Rate

38.40 GTexel/s

804.4 GTexel/s

FP32 (TFLOPS)

1.536 TFLOPS

51.48 TFLOPS

FP64 (TFLOPS)

—

1.609 TFLOPS (1:32)

FP16 (TFLOPS)

—

103.0 TFLOPS (2:1)

AI/RT

RT Cores

—

84

Matrix Cores

—

168

Power

TDP

254 W

300 W

TDP (W)

254

300 +18.1%

Suggested PSU

600 W

700 W

Power Connectors

2x 8-pin

2x 8-pin

Architecture

Architecture

TeraScale 2

RDNA 3.0

GPU Name

Barts

Navi 31

Codename

—

Plum Bonito

Generation

Northern Islands (HD 6800)

Navi III (RX 7000)

Process Size

40 nm

5 nm

Transistors

1,700 million

57,700 million

Die Size

255 mm²

529 mm²

Foundry

TSMC

TSMC

Density

6.7M / mm²

109.1M / mm²

AMD MCM

GCD Transistors

—

45,400 million

GCD Die Size

—

304.35 mm²

MCD Transistors

—

2,050 million x6

API Support

DirectX

11.2 (11_0)

12 Ultimate (12_2)

OpenGL

4.4

4.6

Vulkan

—

1.4

OpenCL

1.2

2.2

Shader Model

5.0

6.8

Physical

Slot Width

Dual-slot

Dual-slot

Length

—

276 mm 10.9 inches

Height

—

110 mm 4.3 inches

Outputs

2x DVI1x HDMI 1.3a1x DisplayPort 1.1

1x HDMI 2.1a2x DisplayPort 2.11x USB Type-C

Bus Interface

PCIe 2.0 x16

PCIe 4.0 x16

Other

Launch Price

—

899 USD

Production

End-of-life

End-of-life

Predecessor

Evergreen

Navi II

Successor

Southern Islands

Navi IV

View Radeon HD 6850 X2 Details View Radeon RX 7900 XT Details