Power Consumption, Temperature, Noise
We measured the power consumption of our Radeon HD 4830 on the following testbed:
- AMD Athlon 64 FX-55 CPU (2.6GHz)
- EPoX EP9-NPA+ SLI mainboard (Nvidia nForce4 SLI)
- PC3200 SDRAM (2x512MB, 200MHz)
- Western Digital Raptor WD360ADFD HDD (36GB, SATA-150, 16MB buffer)
- Chieftec ATX-410-212 PSU (410W)
- Microsoft Windows Vista Ultimate 32-bit
- Futuremark PCMark05 Build 1.2.0
- Futuremark 3DMark06 Build 1.1.0
The 3D load was created by means of the first SM3.0/HDR test from 3DMark06 running in a loop at 1600x1200 with 4x FSAA and 16x AF. The Peak 2D mode was emulated by means of the 2D Transparent Windows test from PCMark05. This test is important as it simulates the user’s working with application windows whereas Windows Vista’s Aero interface uses 3D features. Here are the results:
Despite the 55nm tech process, the peak power draw of the Radeon HD 4830 proved to be somewhat higher due to the complexity of the core incorporating 32 texture processors and 640 ALUs. That’s not much considering the potential of the card, though. The card is easily cooled by the reference single-slot cooler borrowed from the Radeon HD 4850. The GPU temperature is about 50-52°C when idle and 80°C under 3D load – that’s quite normal for a modern graphics card. Still, we wouldn’t recommend you to install your Radeon HD 4830, like any other card that doesn’t exhaust the hot air out of the system, into a cramped system case with poor ventilation.
The reference Radeon HD 4830 uses the same cooler as the Radeon HD 4850, so we can’t spot any difference in terms of noisiness.
The card is not noisy at all. The reduced power consumption means that there should be no overheat because the same cooler copes well with the more advanced HD 4850.