Congrats on the new CPU! I just finished tweaking my x2 4200+ setup tonight, keep trying to grab that extra inch. Here is a copy of my current benchmarks:

5/4/2006 12:20:33 AM||Starting BOINC client version 5.2.13 for windows_intelx86
5/4/2006 12:20:33 AM||libcurl/7.14.0 OpenSSL/0.9.8 zlib/1.2.3
5/4/2006 12:20:33 AM|SETI@home|Found app_info.xml; using anonymous platform
5/4/2006 12:20:33 AM||Processor: 2 AuthenticAMD AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
5/4/2006 12:20:33 AM||Memory: 1023.48 MB physical, 2.40 GB virtual
5/4/2006 12:20:34 AM||Remote control not allowed; using loopback address
5/4/2006 12:20:41 AM||Running CPU benchmarks
5/4/2006 12:20:41 AM||request_reschedule_cpus: process exited
5/4/2006 12:21:40 AM||Benchmark results:
5/4/2006 12:21:40 AM|| Number of CPUs: 2
5/4/2006 12:21:40 AM|| 3060 double precision MIPS (Whetstone) per CPU
5/4/2006 12:21:40 AM|| 9149 integer MIPS (Dhrystone) per CPU
5/4/2006 12:21:40 AM||Finished CPU benchmarks

I'm running Crunch3r's 5.2.13 client and his new SSE2 instructions. I was using Trux's 5.2.6 client w/ Crunch3r's SSE3 till tonight and my Whestone was around 2700+, Dhrystone was around 8900. So the switch gave me a little more of a performance boost. Now I just need another gig of ram.

---

I did some testing on an AMD 64 that supports the SSE3 instructions, using the Reference Unit to test with. Found that that there was almost no difference in the actual crunch times using Crunch3r's SSE, SSE2 and SSE3 versions. The SSE2 version was the fastest by a few seconds. So it really does not make that much difference which one you use. I did not have a dual processor AMD 64 to test with, so there might be a slight difference there due to memory contention problems running dual processors.

Hi all,

I just got an AMD X2 4200+. Which is better for crunching Seti SSE2 or SSE3 instruction (I am using CrunchR3 optimized Seti for Ahtlon64) ?

Thanks

Maxximum

I have an X2 4400 and I use the SSE3 instructions

Although I just started up Seti again after 3 months of not crunching.

---

AMD Athlon 64 X2 4400+
AMD Athlon 64 3800+
AMD AthlonXP 3200+

Thanks

---

Fear will keep the local systems in line. Fear of this battle station. - Grand Moff Tarkin

i have tried sse2 on a amd64bit pc till i was sure itd take sse3
there was very little difference but 2 was slower though only a little about 1.5 min /unit (about 1 days worth of crunching with sse2 as a sample )before going to sse3
(as for the reverse i tried it gave an error on every wu it tried)

---

It's probably best to run the appropriate cruncher for the processor. I'd have my doubts that running the cruncher designed for the SSE3 instruction set on a processor with only SSE2 instructions would do any better than the SSE2 cruncher and it probably would do worse. It wouldn't be too wise to try to force a 1/4-20 nut on a 1/4-28 bolt. The threads would strip.

Thanks, but I was wondering about the other way. SSE2 on a SSE3 CPU?

---

Fear will keep the local systems in line. Fear of this battle station. - Grand Moff Tarkin

It's probably best to run the appropriate cruncher for the processor. I'd have my doubts that running the cruncher designed for the SSE3 instruction set on a processor with only SSE2 instructions would do any better than the SSE2 cruncher and it probably would do worse. It wouldn't be too wise to try to force a 1/4-20 nut on a 1/4-28 bolt. The threads would strip.

---

Is it always better to run the highest instruction set possible? Or is there a case where SSE2 might outperform SSE3 even thought the CPU supports both?

---

Fear will keep the local systems in line. Fear of this battle station. - Grand Moff Tarkin

Hi all,

I just got an AMD X2 4200+. Which is better for crunching Seti SSE2 or SSE3 instruction (I am using CrunchR3 optimized Seti for Ahtlon64) ?

Thanks

Maxximum

Download and install CPU-Z to see what instruction sets that it supports. CPU-Z

I'm not sure, but I think the X2's support SSE3. However I've been a little out of the loop on AMDs processors for a while. I'm pretty sure they brought SSE3 in with the Venice cores though, so it might support it.

Edit: The one with the newest support should work the best on your processor. Although IIRC Chrun3r's and most other optimized apps are desgined specifically for Intel CPUs, although they will help improve time on AMD chips.

---

Hi all,

I just got an AMD X2 4200+. Which is better for crunching Seti SSE2 or SSE3 instruction (I am using CrunchR3 optimized Seti for Ahtlon64) ?

Thanks

Maxximum

---

bi Xeon 3.06 2gig ram
bi AMD Opteron 2210 4gig ram
AMD X2 4200 2gig ram
AMD X2 4800 1gig ram
AMD Opteron 165 2gig ram