PC Index heeft een artikeltje gepost over hun week 17 Athlon 750 met 950MHz core, die zij na verhoging van het voltage en verlaging van de cache divider rock stable op 1076MHz kregen. Deze kloksnelheid ligt vrijwel exact op het punt waarop 2,8ns cache chips hun maximale frequentie bereiken (357MHz * 3 = 1071MHz):
With 1/3 L2 cache setting, 950 core Athlon 750 was rock stable at 1GHz @ 1.70v which is 0.1v lower than Athlon 1000's default 1.80v. Using the thermal probe on Asus K7V we measured the processor's temperature at 1GHz. Thermal probe cable was placed on the core of the processor and Asus Probe V2.03 utility was used to monitor the processor in Windows. The 1GHz processor ran slightly cooler than Athlon 500 @ 750, the temperature ranged between 38-44°C.
To overclock the processor higher, the FSB on Asus K7V motherboard was increased to 103MHz. The processor was still stable and didn't require higher voltage to run 1030MHz. At 105MHz, Athlon 750 started to become less stable and the voltage had to be increased to 1.75v to run 1050MHz. We could load into Windows at 1100MHz @ 1.80v but the processor could not run 1100MHz stable despite the increase voltage to 1.85-1.95v.
At 1100MHz, processor's core and the L2 cache are both running close to their limits since it is 150MHz over the 950 core's limit and the L2 cache is running at 367MHz even with 1/3 L2 cache divider. However we suspect this speed would be achievable with very good cooling in future. We could overclock the Athlon 750 processor stable at 1076MHz @ 1.80v using 107MHz FSB. Extra 70MHz and 0.1v increased the processor's temperature to 47-53°C.
Twee week geleden meldde Ace's Hardware al de ontdekking van Athlon 700's met 950MHz core en 2,8ns L2 cache chips.