- Joined
- Apr 20, 2004
- Location
- JAX, Mississauna
The FX Bulldozers don't do a lot more after about 4.3Ghz. The jury is still out on the PileDriver FX's.
This has not been specifically stated but when we think of scaling we expect the amount on the X axis to produce a linear or straight line upwards movement ie Scaling of the Y axis or result.
What the majority of BD cpus seem to do is as you iincrease the Cpu Mhz beyond ~4.3Ghz the performance increase per Mhz speed increase, diminishes. So the result beyond approximately 4.3Ghz is some amount of increase in performance but hardly enough to balance out the greatly increased temperatures put off by the Cpu because of increased Mhz plus the hefty voltage increase needed to stabilize the cpu beyond 4.3Ghz. And when you get to 4.5Ghz it takes another huge Vcore increase to get beyond that speed toward 4.7Ghz and again still poor scaling with extra temps from extra Vcore.
I best remember it in my head like when I used to put a cam in a 454 Chevrolet motor that made power up to about 6,400RPM but the motor would rev to 7,200RPM. Everyone said why don't you turn that motor on up there. Run 7,000 plus RPM? The simple answer was the power making was done by 6,400 RPM and any further RPM/Mhz was about useless and in fact when referring to an engine, the elapsed times actually got bigger/worse when pushed beyond the power making speed of the engine in RPM of the engine. So from years of racing and building engines I have many crutches to help me keep certain aspecs of "overclocking" relevant in my mind.
RGone...ster.
This has not been specifically stated but when we think of scaling we expect the amount on the X axis to produce a linear or straight line upwards movement ie Scaling of the Y axis or result.
What the majority of BD cpus seem to do is as you iincrease the Cpu Mhz beyond ~4.3Ghz the performance increase per Mhz speed increase, diminishes. So the result beyond approximately 4.3Ghz is some amount of increase in performance but hardly enough to balance out the greatly increased temperatures put off by the Cpu because of increased Mhz plus the hefty voltage increase needed to stabilize the cpu beyond 4.3Ghz. And when you get to 4.5Ghz it takes another huge Vcore increase to get beyond that speed toward 4.7Ghz and again still poor scaling with extra temps from extra Vcore.
I best remember it in my head like when I used to put a cam in a 454 Chevrolet motor that made power up to about 6,400RPM but the motor would rev to 7,200RPM. Everyone said why don't you turn that motor on up there. Run 7,000 plus RPM? The simple answer was the power making was done by 6,400 RPM and any further RPM/Mhz was about useless and in fact when referring to an engine, the elapsed times actually got bigger/worse when pushed beyond the power making speed of the engine in RPM of the engine. So from years of racing and building engines I have many crutches to help me keep certain aspecs of "overclocking" relevant in my mind.
RGone...ster.
What would you recommend for a CPU though just out of curiosity
