Speccy: Video card Current Performance Level: query

Speccy
1

Speccy tells me the following amongst the info for video on a very old machine - can anyone please tell me what the Current Performance Level: Level 0 refers to?

Is Level 0 a low level of performance that could be improved?

Thanks

Manufacturer: ATI

Model: Radeon HD 4600 Series

GPU: RV730

Current Performance Level: Level 0

Count of performance levels : 3
Level 1
GPU Clock: 165 MHz
Memory Clock: 250 MHz
Level 2
GPU Clock: 300 MHz
Memory Clock: 400 MHz
Level 3
GPU Clock: 600 MHz
Memory Clock: 400 MHz

Full info below if needed:

ATI Radeon HD 4600 Series
Manufacturer: ATI
Model: Radeon HD 4600 Series
GPU: RV730
Device ID: 1002-9495
Subvendor: Gigabyte (1458)
Current Performance Level: Level 0

Voltage: 1.150 V

Die Size: 146 mm²

Release Date: May 18, 2009

DirectX Support: 10.1

DirectX Shader Model: 4.1

OpenGL Support: 3.3

GPU Clock: 600.0 MHz

Temperature: 86 °C

Core Voltage: 1.150 V

Bios Core Clock: 600.00

Bios Mem Clock: 400.00

Driver version: 8.620.0.0

BIOS Version: 113-AAXXXXX-XXX

ROPs: 8

Shaders: 320 unified

Memory: 1024 MB

Pixel Fillrate: 4.8 GPixels/s


Count of performance levels : 3


Level 1

GPU Clock: 165 MHz

Memory Clock: 250 MHz


Level 2

GPU Clock: 300 MHz

Memory Clock: 400 MHz


Level 3

GPU Clock: 600 MHz

Memory Clock: 400 MHz