Man that really sucks. Well I was glad I was able to help a little even though it didn't work out for you.
Printable View
Man that really sucks. Well I was glad I was able to help a little even though it didn't work out for you.
I'm online! Last board was bad.
Take note that this is at default frequency (2.2 GHz) without any memory dedicated to CPU2. All memory I/O goes over HT to CPU1. This slows things down quite a bit, but I've only got the two DIMMs for now. :) Even so, it's pretty clear how terrible the CB10 engine is at MT.
http://www.pcrpg.org/pics/computer/o...b10x64-001.png
:woot:
Awesome! Nice to see it working finally.
Hey, you know I'd always be willing to swap those 1MB Pentium Pros you want for those Istanbuls :rolleyes:
:up: Go going there Particle. The kernal usage graph looks like the sickest roller coaster ever :ROTF:
Two CPUs + Radeon 3870 = 259W in WCG :) I win! (at something at least lol)
http://www.pcrpg.org/pics/computer/opty2427/wcg.png
OVERCLOCK! Really I wanna see some overclocks both 1 socket and dual, with stuff like w-prime...
Also whats with red lines in task manger with green?(NVM)
Edit: Found my own answer... kernal times
nice man nice damn i wish someone releases a dual socket overclockin board
Very nice! 26.4 more gigglehurtz to the GRID! :up:
Awesome! Really curious what the speedup will be when the 2nd CPU has access to it's own memory. If you wouldn't mind, run a wPrime 1024M run and record the time for me.
Yes this dis the awesomest-especially at 4 in the morning. Congratulations:up: on all the work thus far on this. Quiet an adventure!!!
Oh my god that's sexy:eek:
Why aren't you overclocking it like a maniac already!:rofl: We want atleast 3GHz!
Gongratz on getting it sorted.
I hope some extra ram arrives soon. I wanna see that thing run alright.
I'll get to work on that tonight. hehe Last night was spent doing some testing on the system to make sure everything operated as expected. Then I began the process of modifying my case to accept an E-ATX motherboard. Being a custom case, I designed it with a 13x14" motherboard tray so that it had the capability to accept an E-ATX board if I chose to use one at a future date, but I'd only drilled and threaded holes for the normal ATX standoff positions. No longer! The new board is mounted! :up: Just needs some more work to finish up before I can get back online for good.
The application I'm using to overclock with seems to stop at an HT base of 250 MHz, effectively limiting me to 2.75GHz. No promises that we'll even hit that, however. These are completely unknown waters to everyone at this point.
Thank you guys for supporting me. :) That's probably most of the reason I did this in the first place--I knew there were curious people around like myself.
Me too. I actually seem to get slightly higher runs out of one 2GB stick in single channel on each CPU, so I'm hopeful that dual channel DDR2-800 will help out significantly.
I'll try to do that wPrime run tonight for you.
Yeah, yeah. :yepp: That's what I was getting at--win at "something" (just power consumption). At 2.2GHz, I've no illusions of setting stunning performance records for anything even with 12 cores. We'll have to see how far it'll clock, and before I go too crazy I want to inspect the VRMs to see what I'm dealing with. I'd also like to get a fan on their heatsinks and maybe some real thermal paste.
Anybody know where I can get a pair of Istanbulls from in the UK?
Or have they not hit our shores yet in anything other than OEM form?
Building a new rig in just over a month and would love to go dual socket.
As always, us Europeans are late to the Istanbul party... that's why I have started buying stuff from the US, it's not only way cheaper but soemtimes the only way to get recent HW.
For example, my Tyan Dual LGA1366 mobo STILL isn't available in Europe! :shakes:
Which stores do you get stuff from jcool and do they deliver to the UK?
One thing that puts me off a bit about importing is that if HM customs intercept the package then they will bend you over a desk and... well... I can't say it because of the dancing bananas but you get the gist.
Sorry I forgot to mention in my previous post particle that your system is amazing and have sub'd this thread cos I can't wait to see your OC'ing results. Even if they are minimal I am very interested to see if it is possible to push any gain out of the system at alll.
I predict that when you have memory for both CPUs, and maybe a board in the future with a much faster HT link speed, you'll see a multi-threaded speedup ~11x, instead of 8.53x. I really think the current boards bottleneck these Istanbuls a lot.
I'm confident we're only seeing a fraction of their performance right now.
Yeah I know direct import isn't an option because of customs, that's why I use.. other means. I can't really disclose them here but generally getting someone else within the EU who lives in a country where customs isn't such an issue to help you reroute the package will do the trick. ;)
Very interested to see if you can OC.
Here's my question, is it possible to get a Quad Socket F board and put 4 of these badboys in?
Yes, but you'd need series 8000 Istanbuls, which are priced out of this world. Like 1600€ per CPU for the slowest 2,4Ghz model.
I've been a bit puzzled by this actually. The Istanbul CPUs support HT3 and the motherboard does as well. I'm not sure why the link is only 5x200. *scratches head* I think the speed seen here isn't really relevant. The link between the CPUs themselves should auto-negotiate directly and establish the proper 4.8GT/s HT link. Only the link to the chipset for PCIe traffic and such should be impacted by the HT link speed shown. I'll see what more information I can find on this.
I'm not certain what you mean. The CPU frequency of the 2427s is 2.2GHz. I've disabled both throttling and PowerNow.
It can certainly be overclocked. I experimented with it briefly on my faulty motherboard and did some 2.5GHz action. I haven't yet figured out how to get vCore up on this board as K10Stat's VID settings don't seem to take effect as far as I can tell.
There are quad boards that can support Istanbul processors, but you'll need 8000 series ones instead of 2000 series like mine. They have extra HT links allowing more CPUs to work together at once, and they're much more (prohibitively) expensive.