• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

Faith restored in AMD, PH II 940 BE FTW

R

Rifter

Lifer
Good afternoon all, as some of you may know i had a very dismal exp OCing my old CPU a 7750BE that needed +.3v just to git 3.0 and would not go over even when i tried booting at +.5V!!! Now thats in the past and has been put on server duty(at stock speeds). I purchased a 940BE to replace it and all i can say is HOLY CRAP go AMD!!! so far its only been a few hours so all results are preliminary untill i do a few overnight burns to really stress it but as of right now here are the results, temps are after 1 hour prime 95 4 thread small FFT:

Stock voltage & speed 43C

Stock voltage @ 3.4Ghz 47C

+.05V @ 3.6Ghz 49C

+.100V @ 3.8Ghz 54C

+.150V @ 4Ghz 60C

This was all tested with 1 hour prime 95 at each speed w/ 4 threads small FFT, also ran E-penis mark vantage on all speeds for 3 runs, did not crash or hang once at listed voltages/speeds but as i said untill i get 24+ hours of prime 95 done i wont say its stable.

Every time i had to bump voltage this was due to computer resetting itself after 3-5 seconds of prime 95, thats is the only thing that has happened no BSOD or lockups it just resets if it doesnt have enough voltage for the speed. This is all under 64bit vista with AMD overdrive i will do a strait BIOS OC when i find stable speed/voltage. Im thinking that the .150V is too much and will probably leave it at 3.8 or 3.6, if i can get it stable at 3.8 with .075V i will do that. I want to keep my max temps under 60C at all times for life of CPU i plan to keep it for 3-5 years. Im using a Xigmatek 1283 heatsink with stock fan, i plan on throwing a high CFM delta on it with a fan controller when i get some more cash. Heatsink and CPU are both fully lapped with 2000 grit paper to mirror polish, with AS 5. Case has great cooling as well its Antec 300 fully loaded with fans.

Temps posted are from AMD overdrive, i believe them as coretemp/speedfan are all within 2c of them.
.
Any comments/suggestions are welcome

Im currently doing some linux testing at +.05V & 3.6 with BIOS OC, im converting all my video collection to one unified format and res(MKV @720P) and this thing FLIES compared to my old CPU, at least 2-3 times faster for video conversions 🙂 And so far so good in linux no crashes!

AMD FTW!!!!! got it onsale for $225 CAD combo w/ xigmatek heatsink

Also got a 4890 to replace my 4830, will start to OC it as soon as CPU is done.
 
i will, when i was running the 7750BE i felt like i was getting ripped off, i was like Black Edition my A$$ this is crap 🙂 now i feel like im stealing speed from AMD lol
 
im going to boot back into vista and get a few hours of gaming done and see how the stabilty works out, going to put it up to the +.150v @ 4Ghz for this and we'll see if my PC catches fire 🙂
 
I also wish i could afford the 955 🙂 crashed in L4D after 20 min at 4Ghz, am now at 3.8 and just finished playing for forty and was fine, going to try crysis now.
 
enjoy ur 940. It is a huge jump from a dual core cpu in most things. Did you keep ur NB speed @ stock or did u OC'd it ?
 
Originally posted by: Rifterut
I also wish i could afford the 955 🙂 crashed in L4D after 20 min at 4Ghz, am now at 3.8 and just finished playing for forty and was fine, going to try crysis now.
Click to expand...

You are using games to test your overclocks?


Sorry, you arent anywhere near stable if a Source game crashes you. Do the correct stability testing, and enjoy your chip.
 
I think my PSU is the issue, it makes a high pith whine when gaming. I think the 4890 combined with the quad core is too much for it (only408w on 12V). It seems to do ok when the 4890 isnt at full power though as I just got up and was running prime 95 small FFT's all night for last 8 hours at 3.8Ghz and its still running fine, CPU temp sitting at 57c, i wasnt using games so much to test stability but to to see what performance was like as i just got new CPU and GPU and obviously i game alot or i wouldnt have spent the cash. As stated in thread i have only had CPU for under 24hours i have not had time to test it fully yet as there is no 5 min test i can do it takes time. I think id call it pretty stable now though if it can handle prime95 for 8 hours. Im almost %100 sure my gaming crash was the PSU, im trying to hold out for the modular corsair 750 when it comes out but might have to purchase one sooner.
 
I honestly havn't seen a A64 based cpu (mainly soi) scale near this well with voltage. 65nm somewhat so I guess but 45nm scales Very well wih voltage.

Its quite interesting what is different in that clockspeed scales so well with increased voltage. 🙂


Jason
 
yeah the 45nm chips are sweet, my 65nm 7750BE sucked(+.3V required just to hit 3Ghz) but this 940BE is sweet, guess AMD got it together when they switched to 45nm. I think im going to leave it at 3.8Ghz as it seems to be the best option between voltage and speed as i dont want to over volt it too much as i plan to keeo it for 3-5 years at least and will probably use it as server CPU after i upgrade next so it could be in use for 10+ years.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top