GPU Comparison

A

AMD

RADEON

AMD Radeon RX 640 OEM

CORE STATE Polaris 23

VRAM 4 GB

CLOCK SPEED —

TDP 50 W

BUS WIDTH 128 bit

ARCHITECTURE GCN 4.0

nm

PROCESS 14 nm

LAUNCH DATE 2020

VS

NVIDIA

GEFORCE

RTX A4000 Mobile

CORE STATE GA104

VRAM 8 GB

CLOCK SPEED 1680 MHz

TDP 115 W

BUS WIDTH 256 bit

ARCHITECTURE Ampere

nm

PROCESS 8 nm

LAUNCH DATE 2021

PERFORMANCE BENCHMARKS

geekbench_opencl

N/A

97,178

geekbench_vulkan

N/A

73,002

passmark_directx_10

N/A

105

passmark_directx_11

N/A

127

passmark_directx_12

N/A

66

passmark_directx_9

N/A

157

passmark_g2d

N/A

585

passmark_g3d

N/A

14,796

passmark_gpu_compute

N/A

6,394

DETAILED SPECIFICATIONS

SPECIFICATION

RX 640 OEM

RTX A4000 Mobile

Core Specs

Shading Units

640

5,120 +700.0%

Shaders

640

5,120 +700.0%

TMUs

40

160 +300.0%

ROPs

16

80 +400.0%

Compute Units

10

—

SM Count

—

40

Clocks

Base Clock

—

1140 MHz

Boost Clock

—

1680 MHz

GPU Clock

1295 MHz

—

Memory Clock

1500 MHz 6 Gbps effective

1500 MHz 12 Gbps effective

Memory

Memory Size

4 GB

8 GB

VRAM (MB)

4,096

8,192 +100.0%

Memory Type

GDDR5

GDDR6

Memory Bus

128 bit

256 bit

Bandwidth

96.00 GB/s

384.0 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB (per SM)

L2 Cache

512 KB

4 MB

Performance

Pixel Rate

20.72 GPixel/s

134.4 GPixel/s

Texture Rate

51.80 GTexel/s

268.8 GTexel/s

FP32 (TFLOPS)

1.658 TFLOPS

17.20 TFLOPS

FP64 (TFLOPS)

103.6 GFLOPS (1:16)

268.8 GFLOPS (1:64)

FP16 (TFLOPS)

1.658 TFLOPS (1:1)

17.20 TFLOPS (1:1)

AI/RT

RT Cores

—

40

Tensor Cores

—

160

Power

TDP

50 W

115 W

TDP (W)

50

115 +130.0%

Suggested PSU

250 W

—

Power Connectors

None

None

Architecture

Architecture

GCN 4.0

Ampere

GPU Name

Polaris 23

GA104

Generation

Polaris (RX 600)

Ampere-MW (Ax000)

Process Size

14 nm

8 nm

Transistors

2,200 million

17,400 million

Die Size

103 mm²

392 mm²

Foundry

GlobalFoundries

Samsung

Density

21.4M / mm²

44.4M / mm²

API Support

DirectX

12 (12_0)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.3

1.4

OpenCL

2.1

3.0

CUDA

—

8.6

Shader Model

6.7

6.8

Physical

Slot Width

Single-slot

—

Outputs

1x DisplayPort 1.4a2x mini-DisplayPort 1.4a

Portable Device Dependent

Bus Interface

PCIe 3.0 x8

PCIe 4.0 x16

Other

Production

End-of-life

End-of-life

Predecessor

Polaris

Quadro Turing-M

Successor

Vega

Ada-MW

View Radeon RX 640 OEM Details View RTX A4000 Mobile Details