Bij Tom's Hardware Guide zijn ze al weer bij deel 4 van het 150 MHz busspeed project gekomen. Maarliefst 18 moederborden met de i815 chipset worden met elkaar vergeleken. De grote winnaars zijn de Asus CUSL2 en de Gigabyte GA-6OXM7E. Grote verliezer is de Abit SE6, zowel op het gebied van snelheid als op het gebied van overklokken presteert dit moederbord zeer matig. De mobo's haalden allemaal de 150 MHz. De Abit SE6 bleef steken op 153 MHz, de Asus CUSL2 haalde een respectabele 185 MHz! Hier een hap uit de conclusie:
Most candidates offer alternative system speeds. 150 MHz were tolerated by each motherboard in this review. Some even offer 166 MHz or more (AOpen, Asus, DFI, IWill, Jetway, MSI, QDI). Only ABit, AOpen, Asus, MSI and Epox include the option to raise the CPU voltage. According to our experience it's often necessary to increase the processor voltage in order to get a stable system. For example if you run a Pentium III 733 at 160 MHz system speed, the CPU will have to cope with 880 MHz. Most of today's Pentium III CPUs will likely fail at the default voltage of 1.65 V, but will work stable as soon as they get 1.7 or 1.75 V.
Asus has far the best overclocking motherboard right now, as I could get the board running even at 185 MHz FSB! Please note that the memory will only run at 3/4 of the system speed if you exceed 166 MHz. The BIOS setup menu makes it very easy to select system and memory speed as well as the core voltage.
ABit offers similar features, but the clock generator seems to be limited to 153 MHz. I've no other obvious explanation for this.
The biggest source for problems seems to be the main memory. Most PC133 memory modules are only specified for CAS Latency 3, reducing the overall performance by approx. 3%. CAS 2 memory is more expensive and more difficult to obtain. Running CAS 3 memory at CAS 2 does sometimes work, but usually you will only experience hang-ups or crashes. One common symptom we see is a SYSmark run that stops.
All candidates left quite a good impression. Two years ago, I did a comprehensive BX motherboard review. I underlined the fact that the performance differences between the motherboards are too little to base a buying decision on them. The same is valid now as well. Most motherboards perform pretty even. Check out the features you really want. Solano boards belong to the most expensive types available right now. I would only spend the higher price for an Asus or Gigabyte motherboard if there is a feature that I really want.