BIOS & Overclocking
The Gigabyte EX58 UD3R in this system features a fully fledged retail BIOS that permits overclocking. As can be seen, the technicians have manually applied memory timings, voltages and system multipliers. Our attempts to manipulate settings were successful and unacceptable settings resulted in a successful reset to failsafe defaults.
With the system's assigned CPU Voltage, we thought it'd be interesting to see how much further scope we could push it's Core i7 920 CPU. After finding a maximum bootable frequency of a touch over 4.00GHz, we found ourselves at a handsome 3.840GHz with a BCLK of 192MHz and a DRAM frequency much closer to it's rated 1600MHz. It should be mentioned that we were temperature limited and a higher frequency would have surely been obtainable with it's fans raised to higher speeds and perhaps a better CPU Cooler.
Stability and Temperatures
The first thing that we wished to focus on with this particular machine was stability. Given that the Titan Goliath's i7 920 processor is overclocked from first build, we wanted to verify it's stability. On a similar note, we also wanted to know how well the Antec 902 copes with cooling a high end systems, especially with it's fans set to “low”.
The first set of stability testing placed the i7 920 processor in the spotlight. OcUK had applied a small Vcore increase to 1.2625V from BIOS, resulting in a consistent actual voltage of 1.2320V. After 8 hours of OCCT's LinPack test, it's temperatures were as follows.
Another crucial aspect of core stability lies with the quality of the power supply unit's 3.3V, 5.00V and 12.00V lines. Throughout our testing, the Corsair TX 650W held up in a robust fashion while operating whisper quiet.
As it's well documented that the Core i7 range are particularly warm runners and that these temperatures are within safe margins, we were satisfied with the result.