I'm building a new system (and robbing a few bits from my old - master hdd & dvd rw drive), so here is what I have come up with, could you guys run your trained eyes over my first build (just to check compatibility, make suggestions etc.)
well, for maximum performance, low latency (CAS 4) DDR2 800 is best for AMD processors. Another thing is that you should probably invest in a higher quality PSU from a company like FSP, corsair, OCZ etc.
Sapphire and Asus are both good companies, I've had a couple of Sapphire cards with no problems.
Well, I'm now thinking of getting a E6750, although having trouble finding a sustainable mobo for under £50 (although I may be setting my sights to high, as I would like a quad ready board, and wouldn't mind - although don't realy mind if I don't have - esata)
The E6750 will definately require DDR2-800 Ram for an OC.
You likely even want DDR2-1066 RAM so you can be push the chip to top performance. It could "idle" at 3.17Ghz with DDR2-800 when it has the potential of about 4.0Ghz.
You will also likely want a good P35 Mobo so you know that FSB speeds will not be an issue.
The newer Intel Chips need very fast ram to meet their potential.
The E4400 can yield peroformance very close to any of the older C2D chips and hit that with simple DDR2-667 RAM which is why I suggested taht combo.
To hit a whole new level, you will need DDR2-1066 or DDR2-800 that can OC will beyond its rated speed. The E6550 will likely not even match a E4400 unless you get it DDR2-1066 but then it will beat it soundly when OC'd to about 3.7Ghz. The E6750 will top close to 4.0Ghz with that some memory.
80GB Samsung SATA II (slave - to be used as a games drive)
PLUS MY EXISTING:
Seagate 120Gb sata (master - already got all my files, OS etc.)
NEC DVD+R9 DL (IDE)
Its looking better than my P4 presshot system anyway! (i know, both 775 boards, although I can probably recoup about 3rd of the cost by selling my old system, so I have to speculate to acumilate, also p5k is quad compatible so when Wolfdale & Yorkfield come out I can upgrade - If i want to)
you might want to consider getting an 8800 gts 640mb instead of the hd2900xt cos it has as good performance for probably less money (if you shop around) and also it will eat less power. And i would highly reccomend getting a bigger power supply than 530 watt. 530 watt MIGHT be fine but you wont know till its built so it could cost you an extra $100 for a replacement power supply if it all goes wrong, it might actually save you money in the long run to spend a bit more on the psu now (i speak from personal experience on this one)
Yeah, got stung on an Antec PSU that came in my Sonata II, within reason, get a good PSU and just keep it for as long as possible. Unclean power, noise, and HDD problems are tricky to diagnose if you have a crap PSU. Also, pay attention to the AMPS on the 12v rails (add them together). More AMPS is better. If your GFX card doesn't have enough juice your system will sporadically restart and artifact. Hope this helps.