Sapphire HD 6450 1 GB Passive Review 16

Sapphire HD 6450 1 GB Passive Review

Value & Conclusion »

Overclocking

The overclocks listed in this section were achieved with the default fan and voltage settings as defined in the VGA BIOS. Please note that every single sample overclocks differently, that's why our results here can only serve as a guideline for what you can expect from your card.



Maximum stable clocks of our card are 765 MHz core (22% overclock) and 837 MHz Memory (25% overclock). Pretty nice overclocking potential! However, considering that this is a low-end graphics card, overclocking it might not be your first priority.

Overclocked Performance

Using these clock frequencies we ran a quick test of Call of Duty 4 to evaluate the gains from overclocking.


Actual 3D performance gained from overclocking is 24.6%.

Temperatures



Despite the passive cooling, temperatures are fine in both idle and load.

Clock Profiles

Modern graphics cards have several clock profiles that are selected to balance power draw and performance requirements.
The following table lists the clock settings for important performance scenarios and the GPU voltage that we measured. We measure on the pins of a coil or capacitor near the GPU voltage regulator.

Core
Clock
Memory
Clock
GPU Voltage
(measured)
Desktop100 MHz150 MHz0.93 V
Multi-Monitor200 MHz667 MHz0.93 V
Blu-ray Playback625 MHz667 MHz1.04 V
3D Load625 MHz667 MHz1.04 V

CCC Overdrive Limits
Core725 MHz
Memory900 MHz
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