GPU Comparison

A

AMD

RADEON

AMD Radeon HD 7950

CORE STATE Tahiti

VRAM 3 GB

CLOCK SPEED —

TDP 200 W

BUS WIDTH 384 bit

ARCHITECTURE GCN 1.0

nm

PROCESS 28 nm

LAUNCH DATE 2012

VS

A

AMD

RADEON

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

PERFORMANCE BENCHMARKS

geekbench_metal

34,050

199,366

3dmark_3dmark_steel_nomad_dx12

N/A

3,689

geekbench_opencl

N/A

154,506

geekbench_vulkan

N/A

152,200

passmark_directx_10

N/A

155

passmark_directx_11

N/A

264

passmark_directx_12

N/A

100

passmark_directx_9

N/A

265

passmark_g2d

N/A

1,030

passmark_g3d

N/A

24,980

passmark_gpu_compute

N/A

13,245

DETAILED SPECIFICATIONS

SPECIFICATION

HD 7950

RX 6800 XT

Core Specs

Shading Units

1,792

4,608 +157.1%

Shaders

1,792

4,608 +157.1%

TMUs

112

288 +157.1%

ROPs

32

128 +300.0%

Compute Units

28

72 +157.1%

Clocks

Base Clock

—

1825 MHz

Boost Clock

—

2250 MHz

GPU Clock

800 MHz

—

Game Clock

—

2015 MHz

Memory Clock

1250 MHz 5 Gbps effective

2000 MHz 16 Gbps effective

Memory

Memory Size

3 GB

16 GB

VRAM (MB)

3,072

16,384 +433.3%

Memory Type

GDDR5

GDDR6

Memory Bus

384 bit

256 bit

Bandwidth

240.0 GB/s

512.0 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB per Array

L2 Cache

768 KB

4 MB

L3 Cache

—

128 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

25.60 GPixel/s

288.0 GPixel/s

Texture Rate

89.60 GTexel/s

648.0 GTexel/s

FP32 (TFLOPS)

2.867 TFLOPS

20.74 TFLOPS

FP64 (TFLOPS)

716.8 GFLOPS (1:4)

1,296.0 GFLOPS (1:16)

FP16 (TFLOPS)

—

41.47 TFLOPS (2:1)

AI/RT

RT Cores

—

72

Power

TDP

200 W

300 W

TDP (W)

200

300 +50.0%

Suggested PSU

550 W

700 W

Power Connectors

2x 6-pin

2x 8-pin

Architecture

Architecture

GCN 1.0

RDNA 2.0

GPU Name

Tahiti

Navi 21

Generation

Southern Islands (HD 7900)

Navi II (RX 6000)

Process Size

28 nm

7 nm

Transistors

4,313 million

26,800 million

Die Size

352 mm²

520 mm²

Foundry

TSMC

TSMC

Density

12.3M / mm²

51.5M / mm²

API Support

DirectX

12 (11_1)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.2.170

1.4

OpenCL

2.1 (1.2)

2.1

Shader Model

6.5 (5.1)

6.8

Physical

Slot Width

Dual-slot

Dual-slot

Length

278 mm 10.9 inches

267 mm 10.5 inches

Height

111 mm 4.4 inches

120 mm 4.7 inches

Outputs

1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2

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

Bus Interface

PCIe 3.0 x16

PCIe 4.0 x16

Other

Launch Price

449 USD

649 USD

Production

End-of-life

End-of-life

Predecessor

Northern Islands

Navi

Successor

Sea Islands

Navi III

View Radeon HD 7950 Details View Radeon RX 6800 XT Details