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| BASS!:
I am by no means the expert taz is, but I can at least help break it down a little bit --- Quote from: lanman31337 on February 22, 2008, 02:46:52 pm ---DM, I know you have some AMD x2 rigs - have you tried ocing your rigs, and do they do well with mame? I have a 4800+ for my mame rig. --- End quote --- The best athlon Ive run on is a 64 3200 and got it up to 2.6ghz. And yes they do well for mame rigs, you just wont be able to play gauntlet legends / NFL blitz. The first time Ive seen these playable is with Taz's quad core benchmarks. --- Quote from: headkaze on February 22, 2008, 02:30:16 pm ---I must admit I'm a little hessitant to do this now judging by the explaination there taz lol. I have an Asus P5KR motherboard, E8400 @ 3Ghz, 2xPC5300 1 GB (which I believe is 667 Mhz). I have the ASUS overclocking software AISuite installed and I'm staring at the screen. I really can't afford to screw this PC up, just how risky is overclocking? I have reasonable air cooling but I run this PC 24/7. If I overclock can I run it like that all the time or should I only do it for when I need the extra speed? Here is a screenshot I took of AISuite. What temperatures should I be expecting and what temps should I be worried about? --- End quote --- The temps he is talking about is what looks like a bug in the chip itself. Toms hardware wrote an article on this and they also posted a big one about overclocking your chip. http://www.tomshardware.com/2008/02/19/wolfdale_on_steroids/ The temps skyrocket on one core and not the other and give bad readings on some of the earlier versions. You may have one, you may not, don't worry about it. The rest he can break down, but before he does i recommend doing some basic reading about what overclocking is exactly. Learn about Multipliers Front side bus speed Vcore - processor voltage Memory overclocking - ie ram and ram timings like 4-4-4-12 The --- Quote from: taz-nz on February 22, 2008, 04:10:38 am --- If done right and with a little luck it will be nice and stable at these settings, now you need to torture test your CPU with something like Orthos, to take it to 100% load and hold it there for hours, I suggest at least 10 hours for you final test with the PC house as it will be in operation. Keep an eye on the CPU tempature and make sure it stays within safe limits anything up to 65 degs C is ok, over that is getting hot, and if it gets to 80 Deg C it will more than likely lockup before it can do any real harm, you really want it in the 20-30s at idle and in the 40s to low 50s at full noise. If it pass that it should be ready to use, it you want to further test it warm up the room tempature to that of a hot summers day and test it again for 24 hours, if it pass that you good to go. Then all your've got to do is have fun. Make sure your BIOS and Drivers are up to date before you start, I suggest using CPUz to get Live actual CPU speed & voltage information, the lastest CoreTemp is you best bet for watching CPU core temps, Orthos does a great job of stress you CPU & RAM to in limits (use blend test) and Windows task manager will confirm your CPU is at 100% load on all cores. Just take your time, and test each new setup with orthos as you go. --- End quote --- This is important. Programs like orthos and prime95 help you to max out your cpu to burn it in. Cpu-z will help you pull the temp off your cpu. I don't know what I'm missing and I hope I helped in some small way. |
| taz-nz:
--- Quote from: headkaze on February 22, 2008, 02:30:16 pm ---I must admit I'm a little hessitant to do this now judging by the explaination there taz lol. I have an Asus P5KR motherboard, E8400 @ 3Ghz, 2xPC5300 1 GB (which I believe is 667 Mhz). I have the ASUS overclocking software AISuite installed and I'm staring at the screen. I really can't afford to screw this PC up, just how risky is overclocking? I have reasonable air cooling but I run this PC 24/7. If I overclock can I run it like that all the time or should I only do it for when I need the extra speed? Here is a screenshot I took of AISuite. What temperatures should I be expecting and what temps should I be worried about? --- End quote --- Overclocking is easy once you get to grips with the basics and get an understanding of what all the bios setting do, everything effect everything else, that's why you need to it in stages otherwise it becomes almost impossible to work out where you when wrong. If you have questions as to what all those option in bios do, hit me with it, I'll do my best to explain, just don't ask me to explain it all at once. Your memory will be your biggest issue, DDR2-667 like you have runs at 333mhz double pumped, so the 333mhz FSB of you CPU puts your memory at it's maximum stock speed straight away, say your aim for 4ghz with your CPU, for memory would end up almost 50% overclocked to get there, now that a big push for most memory and outside what I would rate as practical or save, you best option would be to be dump your current memory on a friend or family member with a PC in need of a bit more get up and go, and grab yourself a couple of GB of good DDR2-800 or better yet DDR2-1066 RAM. Memory is dirt cheap these days so it doesn't have to cost you the earth. Then as long as you have a good aftermarket heatsink, you should be good to go. Software overclocking has it's place, but it doesn't give you access to nearly as many setting to adjust, so it soon limits the level of overclocking you can achive, There are a number of bios features that needed to be disable before any form or overclocking is attempted, as they will cause stability issues with an overclocked CPU, so you end up having to change BIOS settings anyway so you may as well just do it all in BIOS where you'll get the best results. Overclocking very safe as long as you don't push things too far, too much Voltage or heat and things can get nasty, A good heatsink & Powersupply are a must. The thing to remember is the Core 2 Duo is not an Athlon XP, the Core 2 Duo has great built in safeties for heat and will shut it self down if needed before any damage is done, just be smart about it, if you crank the FSB up to 600mhz and pumping 1.8v into your CPU and having it run a 75degs you would just be asking for trouble. Those tempatures look normal for a stock setup, I would expect lower temps if you were using an aftermarket cooler, but it depends of the room temp and the design of your case. --- Quote from: divemaster127 on February 22, 2008, 02:42:59 pm ---Taz is a better overclocker than I am, but unless he disagrees I prefer to overclock from the bios, a rule of thumb for me is 25% overclock then I usually just call it good. dm --- End quote --- 25% is a good overclock for most CPUs, but the Core 2 Duo is a whole other league with the average overclock falling in the 33%-75% range, they have so much head room it's basically a crime not to overclock them, you can get 25% overclocks with the stock heatsink I many cheaper models. --- Quote from: lanman31337 on February 22, 2008, 02:46:52 pm ---DM, I know you have some AMD x2 rigs - have you tried ocing your rigs, and do they do well with mame? I have a 4800+ for my mame rig. --- End quote --- The Athon64 x2 overclock well, the last one I had in my primary system was overclocked by about 40%, and they do well in MAME to a point, but they can't jump the preformance gulf between what is needed to run most ROM and what is required to run all ROM (well almost all). They just don't have the preformance to clock ratio that the Core 2 Duo does, and the extreme overclockablity (is that even a word) of Core 2 Duo only widens the preformace gap between the two CPUs. If I had the spare cash laying around I'd probably grab a GA-G33M-DS2R boarch and transfer over my CPU, Heatsink and ram to it, and benchmark it to see if using the onboard graphics had any negative on MAME preformance, because if it didn't then it would be a good choice for people trying to slim down the cost of preformance MAME system. The board is well documented as a great overclocker, with people run anywhere up to 500fsb and some beyond. When the next shipment of stock comes in a work, I may have to see if I get the boss to lead me one for a week to test, it's not likely to happen but it's possible. |
| Jdurg:
With my tax refund I went out an got myself a new laptop with a 2.50 GHz T9300 Core2Duo CPU in there. I just ran MK4 on a non-optimized, 64-bit version of MAMEUI64 and had a VERY playable session. I was averaging about 90% in game and was at 100% for many of the cut scenes. I was very shocked to see such good performance from a relatively low-speed CPU. I'm also running 64-bit Windows Vista which I have yet to optimize yet. |
| Tiger-Heli:
--- Quote from: headkaze on February 22, 2008, 02:30:16 pm ---I have the ASUS overclocking software AISuite installed and I'm staring at the screen. I really can't afford to screw this PC up, just how risky is overclocking? I have reasonable air cooling but I run this PC 24/7. If I overclock can I run it like that all the time or should I only do it for when I need the extra speed? --- End quote --- HK - I ended up not spending the money on a new rig - but in your case, I really like the advice The Manuel posted on Page 3 (at the bottom) of this thread: Finally, to extend the life of the processor, I set my power scheme to laptop/portable so that EIST kicks in and the CPU multiplier is knocked down to 6X form 9X while the computer is idle or doing light duty like browsing the web or playing pacman :-) but immediately goes to full throttle when more processing power is required. As a result, my 2.7GHz is running at 1.8GHz most of the time which happens to be the stock speed. |
| BASS!:
So sweet!!!!!!! Got the processor in the mail today, and built the machine. The processor came in at 3ghz on first boot, I updated the bios and did a burn in. After some tweaking I got this up to 4ghz. The e8400 is amazing. If you don't have a newer processor yet, you have to buy this. To Taz - You helped a lot with the timings and the ocing. K back to the burn in. Ill let ya know in the morning how it all turned out. |
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