a friend of mine has just built up an uber PC
his spec is as follows:
Athlon 2800+ (Barton)
2x512MB TwinMOS PC3200
Radeon 9800 Pro 128MB
120GB S-ATA hdd
450W Antec PSU
Thermaltake Xaser Case
Lite-On 52/32/52 CD-RW
it's obviously a rather powerful machine, benchmarking in 3dMark03 at 5409 standard:
however, he wasn't satisfied with that and overclocked the cpu and tweaked the ram to try and increase performance...
he dropped the cpu multiplier to 11 and increased the fsb to 200MHz ddr (400MHz effective), yielding a clock speed of 2.2GHz (effectively an Athlon 3200+)
he also tightened the timings from the standard 2.5-4-4-8 to 2-3-3-7, however, this overclocked setup actually caused a huge dip in performance:
does anyone know what the cause could be?
firstly, you'd think temperature might be the issue here, however, his system is running pretty cool:
is it possible that the large increase in fsb (nearly 20%), has interfered with the AGP bus and caused the decrease in performance?
any help/advice would be greatly appreciated