I have take in reference Toms benchmark with P4 1.8 and T-bird 1.4.Benchmark Quake 640*400*16 bit and sysmark overall.
Quake
P4 1.8 236.4
P4 1.7 229.7
T-bird 1.4 198.3
T-bird 1.2 185.8
So P4 gain 6.7 FPS vs 6.25 for T-bird for each 100 mghz
Sysmark
P4 1.8 179
P4 1.7 167
T-bird 1.2 134
T-bird 1.4 157
So P4 gain 12 point for each 100 mghz vs 11.5 for T-bird.
There some missing point for T-bird or each mgz increase in P4 have more impact or it just the precision of the benchmark.In the benchmark from X-bit lab (photoshop) T-bird dont seen to increase performance with faster core.
Maybe i get this part wrong.
T-bird do more instruction clock for clock.
(fiction number)If we tell that Tbird do 2.3 instruction per cycle and P4 2 instruction.So in rought theory t-bird suppost to be faster by 15% for each 100mghz.Ex: T-bird do 2.3 instruction per cycle 2.3*100=230 P4 2*100=200.230-200= 30 so T-bird do 30 instruction more that P4 be each 100 mghz.In real life P4 increase faster with each 100 mghz in quake and sysmark and maybe more or it just the case of Quake ans sysmark.
There some question and theory.If you know a part that i have miss tell me.
Quake
P4 1.8 236.4
P4 1.7 229.7
T-bird 1.4 198.3
T-bird 1.2 185.8
So P4 gain 6.7 FPS vs 6.25 for T-bird for each 100 mghz
Sysmark
P4 1.8 179
P4 1.7 167
T-bird 1.2 134
T-bird 1.4 157
So P4 gain 12 point for each 100 mghz vs 11.5 for T-bird.
There some missing point for T-bird or each mgz increase in P4 have more impact or it just the precision of the benchmark.In the benchmark from X-bit lab (photoshop) T-bird dont seen to increase performance with faster core.
Maybe i get this part wrong.
T-bird do more instruction clock for clock.
(fiction number)If we tell that Tbird do 2.3 instruction per cycle and P4 2 instruction.So in rought theory t-bird suppost to be faster by 15% for each 100mghz.Ex: T-bird do 2.3 instruction per cycle 2.3*100=230 P4 2*100=200.230-200= 30 so T-bird do 30 instruction more that P4 be each 100 mghz.In real life P4 increase faster with each 100 mghz in quake and sysmark and maybe more or it just the case of Quake ans sysmark.
There some question and theory.If you know a part that i have miss tell me.