Just how far can an Athlon XP go?

Fox5

Diamond Member
Jan 31, 2005
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Hey, I was previously running my athlon xp with a 205mhz fsb with 3 sticks of ram...well one of the 512MB sticks died, and I suddenly found myself able to boost the fsb even higher. (though I only have 768MB of ram now)

Using two PC2700 memory sticks (one made before PC3200 existed and sold as a PC2100 stick), I was able to overclock rock solid (12 hours prime stable) up to 221mhz fsb at 3-3-3-11 timings, and mostly stable up to 225mhz.

While my gaming will probably suffer more due to the lose of the 512MB stick, I wonder how much of a performance boost I've gotten from the increase fsb. BTW, my cpu is only at 2.21ghz at 1.550V (eventually I'll try 1.525V and see if it's stable), max speed I've ever reached on the cpu is around 2.7ghz but I never had the cooling for it, 2.4ghz-2.5ghz was the usual but with the very high fsb and the fact that I'm now in a hot very well insulated college dorm room, I just don't have the cooling for those speeds(between 2.3ghz to 2.4ghz is doable with lower fsb settings though).

Sure, this is still a low end system in the days of 3ghz opterons, but considering this is the same hardware I had when the athlon 64s came out, it'd be interesting to see the performance I could have had. (well, I was clocking the mhz higher, along with higher voltage back then, so I was probably better off then than now, but it's the best the cpu can handle now in the circumstances, and fsb speeds were the main limit of the athlon xp so it's neat to seee it high)

Anyhow, benchmarks!
Cpu-z reports: 173 clock cycles to main memory.

Everest puts its memory read at 3241 MB/s, which is just above a 2.4ghz p4 with dual pc1066 rdram, and right below a 2.4ghz p4 with dual pc2100...and it's a healthy amount above a 2ghz athlon 64 single channel.

Memory writes at at 1183MB/s, which is right above an Athlon XP 3200+ and right below an Athlon 64 2ghz (3200+), and beats out a 2ghz athlon 64 3000+.

Memory Latency is 85.1ns, which puts it well above the average athlon xp system, right in the midst of the best stock p4 systems, and still way above any athlon 64 systems using pc3200 memory.(right about on par with one using pc2100 though)

Sandra puts it at results that are nothing special, about on par with what you'd expect from an athlon xp 3200+.(and a 2.2ghz opteron and pentium m in most cases)

So any real world tests to see if my o/c xp is a socket 754 competitor, or just another xp in the crowd? For that matter, do 11-x-x-x timings give the fastest results on an nforce2 platform, or are there faster timings?