Search found 83 matches

by aqm consultant
Mon Dec 18, 2006 2:08 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

One more data point. I broke down and built an Asus M2N-SLI Deluxe with AMD x2 5200+. Benchmark times are identical to the x2 5000+ (same CPU clock speed, but half the L2 cache of the 5200). Conclusion remains the same -- for this code, it's strictly CPU cycles. System info if you're interested sinc...
by aqm consultant
Mon Dec 18, 2006 1:54 pm
Forum: Newcomers Briefing Room
Topic: Board Case or CPU Problem? New Build Please Help
Replies: 11
Views: 6031

Clicking hard drives are not good. I had that problem shortly before complete drive failure :( . I also had a "won't boot reliably" problem that was caused by crummy IDE drive cables. Check all cable connections -- power and data. Good luck!
by aqm consultant
Wed Dec 13, 2006 12:01 am
Forum: CPU Cooling
Topic: CPU Coolers for new build
Replies: 16
Views: 3780

Well, got all the parts except an alternate HSF. Guess I'll build it and see if the stock cooler sounds like my old Athlon Thunderbird (not too bad -- couldn't hear it if I was more than 1/4 mile away :P ). The Mine does look good. Before that, however, I could have other issues that will cause prob...
by aqm consultant
Tue Dec 12, 2006 6:14 pm
Forum: CPU Cooling
Topic: CPU Coolers for new build
Replies: 16
Views: 3780

Understood. FWIW, the mfr specs on the Mine are 22 dba, while the Zalman are 19-27. I'm planning on running CnQ which works really well on my 4800+, and this one I'll tolerate as it will be in a different room and not often loaded to 100% cpu on both cores (but even if it is, I won't be next to it)....
by aqm consultant
Tue Dec 12, 2006 4:56 pm
Forum: CPU Cooling
Topic: CPU Coolers for new build
Replies: 16
Views: 3780

Thanks Chris. Jaganath points out the Scythe Mine as another alternative, and it's apparently ~530g (at least the previous version reviewed here). Can't find a weight on the SCMN-1100 rev B, but looks to be a good compromise.
by aqm consultant
Tue Dec 12, 2006 4:48 pm
Forum: System Advice / Troubleshooting
Topic: Advice on P150 system
Replies: 3
Views: 2059

Oops. Yep. Was poking around on the scythe website and it listed the Mine as discontinued, but apparently this was the SCMN-1000. Newegg show current version is SCMN-1100 which is apparently the AM2 version. Looks to be lighter and cheaper than Zalman's.
by aqm consultant
Tue Dec 12, 2006 3:51 pm
Forum: System Advice / Troubleshooting
Topic: Advice on P150 system
Replies: 3
Views: 2059

Palmem --
I note this post has been up awhile with no response. Did you build this system? I'm debating what to replace the stock HSF on a 5200+ on the M2N-SLI in a P150 as well. Thinking about Zalman CNPS 9500 AM2 at the moment.
by aqm consultant
Tue Dec 12, 2006 1:32 pm
Forum: CPU Cooling
Topic: CPU Coolers for new build
Replies: 16
Views: 3780

I'm (unfortunately) in the market too. Just got the x2 5200+ AM2 chip and was surpised to find a small cheesy solid aluminum HS is now stock! :shock: The fan even LOOKS noisy. The one that came with a 4800+ S939 processor 8 months ago had heat pipes and a larger pretty quiet fan, especially on CnQ. ...
by aqm consultant
Tue Dec 05, 2006 12:53 pm
Forum: CPUs and Motherboards
Topic: Bench help? FX6x, x2 5200+, or C2D 6600 or higher?
Replies: 4
Views: 1826

The answer is in. Thanks to pyogenes for running a number of tests on an E6600 at both stock, over- and underclocked speeds, as well as varying FSB and memory speeds. :D See the link above for details. Short version: Run times are exactly inversely related to CPU frequency, regardless of cache, FSB ...
by aqm consultant
Tue Dec 05, 2006 12:45 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

I solicited benchmarking volunteers on another thread ( http://www.silentpcreview.com/forums/viewtopic.php?t=36291 ). Thanks to pyogenes for running a number of tests on an E6600 at both stock, over- and underclocked speeds, as well as varying FSB and memory speeds. Neither the FSB or memory speeds ...
by aqm consultant
Mon Dec 04, 2006 5:34 pm
Forum: CPUs and Motherboards
Topic: Bench help? FX6x, x2 5200+, or C2D 6600 or higher?
Replies: 4
Views: 1826

Anybody? Please?
If you're concerned about malicious code, I can send only the batch files and inputs, and give you the URL from which you can download the executable for a US govt website.

Thanks.
by aqm consultant
Mon Dec 04, 2006 2:52 pm
Forum: CPUs and Motherboards
Topic: Bench help? FX6x, x2 5200+, or C2D 6600 or higher?
Replies: 4
Views: 1826

Bench help? FX6x, x2 5200+, or C2D 6600 or higher?

I use a number of single thread legacy code number crunching programs and am trying to confirm whether the C2D processors w/4Mb L2 cache or x2/FX processors w/1Mb L2 cache have any significant advantage over other A64 x2s. So far, it looks like a push for the C2Ds (up to 6300), but I've not been abl...
by aqm consultant
Fri Nov 17, 2006 4:50 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

jaganath wrote:C2D's OC well, if overclocking is an option for this task.
So it's reported. With the EX6800 priced at about 2.5x an x2 5200+, it's still pretty hard to justify. Maybe see if an E6600 can get to 3.5GHz? Without a liquid nitrogen cooler? :roll:
by aqm consultant
Fri Nov 17, 2006 3:08 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

Are you doing finite element calculations or something similar? I have been facing a dilemma over the C2D or x2 is a better choice also and I have been unable to find some good benchmarks for these types of simulations. The math isn't that exotic -- deterministic calculations (trig, exponentials, e...
by aqm consultant
Wed Nov 15, 2006 12:06 am
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

Sorry. Not me. I don't even have any games.
My kids do, and they're cool, but this is business. . . ..
by aqm consultant
Tue Nov 14, 2006 4:03 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

The stream computing option looks interesting if I can figure a way pass calculations for non-conflicting array locations efficiently. Looks like the NVIDIA CG Toolkit might make this doable. However, I wonder if the processing advantage won't be wiped out by the need to pass all the data over the P...
by aqm consultant
Mon Nov 13, 2006 11:57 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

I've never overclocked, but the output is spatial (2D) and RAM errors that might be prevented by ECC would be painfully obvious (generating reruns). Multiple sensitivity runs and graphical evaluation are standard. I've looked at dual socket options a bit, but the price (given that multiple runs and ...
by aqm consultant
Mon Nov 13, 2006 2:52 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

While the range of benchmarks with modern code optimized for current processors indicate a clear edge for Conroe, it’s less clear that this can be extrapolated to legacy code. In my case, the code for various models (over 50,000 lines in one case) has a regulatory history, and any significant modi...
by aqm consultant
Fri Nov 10, 2006 12:02 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

Thanks guys. I wasn't aware of the Xeons, but looks like I'd have to wait till January. Sounds like maybe I should consider a P5B and an E6600 or E6700 for now, and then upgrade to a quad core in a few months, since apparently there'd be no need to replace the P5B. 'Course I'd then have the joy of f...
by aqm consultant
Wed Nov 08, 2006 7:08 pm
Forum: CPUs and Motherboards
Topic: C2D and motherboards for number crunching?
Replies: 28
Views: 13957

C2D and motherboards for number crunching?

I'm at it again -- Built an AMD x2 4800+ box in the Spring (Asus w/passive NB, stock cpu HSF, passive graphics, P150 w/120mm Nexus in the back and 2 92mm in the drive bays, Q-fan enabled). Did have to RMA the S0511... Neo HE 430 to get one that wouldn't shut down at full load. It's currently running...
by aqm consultant
Sun Aug 13, 2006 10:57 pm
Forum: Power Supplies
Topic: Antec NeoHE "High-Efficiency"
Replies: 606
Views: 408979

Mine worked fine too, but I was concerned about failure under heavy load (AMD x2 4800+) running old-school DOS exectuables. I ran into some ntermittent problems there (random shutdown) running two instances of my test code (i.e., load up both cores so Task Mgr shows 100% CPU continuous. A better tes...
by aqm consultant
Mon Jun 12, 2006 10:18 am
Forum: Power Supplies
Topic: Antec NeoHE "High-Efficiency"
Replies: 606
Views: 408979

Since discussion of this topic doesn't seem to be abating, thought I'd provide an update. System: Asus A8N-SLI Deluxe AMD x2 4800+ (stock HSF) 2 x 1Gb RAM 2 x Samsung SP250c 250 Gb SATA HD in RAID 1 (NVIDIA controller) GeForce 6600LE passive cooler video Running CoolNQuiet Originally built with Neo ...
by aqm consultant
Fri May 12, 2006 3:45 pm
Forum: Silent Storage
Topic: Suggestions for gigabit NAS?
Replies: 2
Views: 1571

Suggestions for gigabit NAS?

I'd like to set up network attached storage to my network through a gigabit switch or router. The NAS packages that do gigabit throughput are EXPENSIVE. An alternative is to take an old PIII box I have, but a gigabit NIC in it, and set it up as a server (with associated non-insignificant software co...
by aqm consultant
Thu Apr 27, 2006 3:55 pm
Forum: Consumer Advocacy
Topic: Antec Neo HE PSU Users Poll
Replies: 355
Views: 440625

Post-RMA update

re: my previous problems with arbitrary shutdowns, I RMA'd the NeoHE 430, and got a new one (rev A4, SN S060302xxxxx). Everything now seems fine. Have run both cores at 100% CPU for anywhere from 8 to 24 hours straight with no hiccups. Current config: ASUS A8N-SLI Premium x2 4800+ w/stock HSF 2x1Gb ...
by aqm consultant
Thu Apr 27, 2006 3:28 pm
Forum: CPUs and Motherboards
Topic: Need advice choosing Memory for ASUS A8N-SLI Premium
Replies: 23
Views: 7116

Won't boot at CAS 2

I'm now up and running an x2 4800+, ASUS A8N-SLI Premium with 2x1Gb OCZ DDR3200 Dual Channel Titanium memory. According to OCZ, these should run at 2-3-2-5 timings. Leaving timing in BIOS on auto, CPU-Z says the timings are 2.5-3-3-5. If I change BIOS to manual and set CAS to 2, the system starts bo...
by aqm consultant
Sun Apr 16, 2006 11:14 pm
Forum: Consumer Advocacy
Topic: Antec Neo HE PSU Users Poll
Replies: 355
Views: 440625

GR8BALD1 -- There seems to be two problems: unable to boot, and arbitrary shutdowns. I'm glad it worked for you. I too was worried about whether my system would boot, but have had no problems. However, I haven't heard of a solution for the "power off under load" problem." In my case, I can do almost...
by aqm consultant
Sun Apr 16, 2006 2:19 pm
Forum: Consumer Advocacy
Topic: Antec Neo HE PSU Users Poll
Replies: 355
Views: 440625

I spoke too soon. Although I've had no boot problems (other than BIOS warnings about low fan speeds), and although it has been completely stable under normal use, it can't handle full CPU loading. :cry: After any where between ~4 minutes and 6 hours (based on 7 or 8 tests), the system simply powers ...
by aqm consultant
Wed Apr 12, 2006 2:09 pm
Forum: Consumer Advocacy
Topic: Antec Neo HE PSU Users Poll
Replies: 355
Views: 440625

After a number of distractions and delays, finally got around to ordering and assembling. Even though I have an early PSU (S/N S0509......) (whose seal was broken on arrival), everything seems to be working! System config: P150 w/Neo HE 430 ASUS A8N-SLI Premium x2 4800+ 2 x 1Gb OCZ Platinum 2-3-2-5 ...
by aqm consultant
Mon Mar 20, 2006 3:09 pm
Forum: CPUs and Motherboards
Topic: Help! How and when to update NF4 chipset driver and BIOS?
Replies: 7
Views: 2458

Hi Live, I'd normally expect that, but the ASUS site says (somewhat cryptically): "A8N-SLI Premium Bios version 1009 Please do read the description before updating BIOS To avoid crashing file system, please do update the chipset driver to below version prior to this Bios. For WinXP 32bit system, ple...
by aqm consultant
Mon Mar 20, 2006 12:09 pm
Forum: CPUs and Motherboards
Topic: Help! How and when to update NF4 chipset driver and BIOS?
Replies: 7
Views: 2458

Thanks Mr. Evil and Locklear-- Couldn't hit pause fast enough to get the screen to hold, but went back into BIOS, turned off quick boot and "full screen logo", and low and behold, found that the BIOS is the current 1009 version. So, the chipset driver must also be current. :D No update needed and I ...