I finally got up the balls to attempt to overclock my Pentium 4 2.4C up to 3.6GHz. Regularly, it is at 3.0GHz (1.5375 vcore) and I wanted to juice it up. I'm using DDR400 so I switched from a 5:4 ratio to a 3:2 ratio. I threw up the vcore to 1.6 and noticed it fail Prime95 stress test before the first test would even complete. I then noticed how CPU-Z listed my vcore at around 1.552, so I upped the vcore to 1.7 and now CPU-Z reads a vcore of 1.668. I ran Prime95 and it failed again. I kept the voltage and switched the bus down to 285MHz (190MHz memory). It failed, so I threw down the bus to 275MHz (183.4MHz memory) and ran Prime95. I watched the rest of the Rose Bowl and the entire Orange Bowl, and I arrive to see Prime95 still stressing my processor a little more than four hours later. I like what I see, especially for a 1.6 vcore (1.552~1.568). Now, my question is... which situation would performance better in?
#1
2.4GHz @ 3.0GHz
1.0GHz Bus (250MHz)
250MHz X 12 = 3.0GHz
5:4 Ratio
Memory ~ 200MHz
Latency: 2-3-3-6
OR
#2
2.4GHz @ 3.3GHz
1.1GHz Bus (275MHz)
275MHz X 12 = 3.3GHz
3:2 Ratio
Memory ~ 184MHz
Latency: 2-3-3-6
I tried Sandra and I get a 5134/5140 memory benchmark with situation #2, which is funny since in situation #1, I get in the high 4000s. Will the gain of processor MHz make up for the loss in memory MHz. Or will the memory perform faster now at 184MHz along with the faster processor than it would at 200MHz with the slower processor? Basically I'm worried about the memory and whether that is going to handicap my computer. I'm going to try to squeeze out a 2-2-2-5 latency at 184MHz with my RAM... try 2.8 volts this time.
#1
2.4GHz @ 3.0GHz
1.0GHz Bus (250MHz)
250MHz X 12 = 3.0GHz
5:4 Ratio
Memory ~ 200MHz
Latency: 2-3-3-6
OR
#2
2.4GHz @ 3.3GHz
1.1GHz Bus (275MHz)
275MHz X 12 = 3.3GHz
3:2 Ratio
Memory ~ 184MHz
Latency: 2-3-3-6
I tried Sandra and I get a 5134/5140 memory benchmark with situation #2, which is funny since in situation #1, I get in the high 4000s. Will the gain of processor MHz make up for the loss in memory MHz. Or will the memory perform faster now at 184MHz along with the faster processor than it would at 200MHz with the slower processor? Basically I'm worried about the memory and whether that is going to handicap my computer. I'm going to try to squeeze out a 2-2-2-5 latency at 184MHz with my RAM... try 2.8 volts this time.