The price is around £400, and $500 (this is not a converted price, it is an estimate from a few web pages i have checked), and I would like to know if you guys could come up with a better, good price/performance, build that is £300-£400
Since your budget converts to $640 in USD. I have a build on Newegg thats Intel with a great graphics card that comes out to $660.25 USD which is around 411/412 pounds. Not sure how tax is where you are at but if its close to California's tax in the US its going to be about the same price if you find the parts around the same price.
You might have to look for a different PSU, because I'm not sure if this PSU can do both US and UK power requirements. I'm assuming it does.
If you look for these parts individually on a good UK E-Tailer then hopefully they are around the same price, and if anything this gives you ideas to look at for Intel's side.
One way to get a good deal on a graphics card is to goto neweggs refurbished section. Its a risk i took buying $220 ish GTX 560 Fermi PNY for $169; $159 for Gtx 550 at the time. Considering it had double the performance of the 550 and has been going strong since March. Warning: you will be paranoid of imminent failure until you have money for a backup. But considering its still going im looking for a twin brother...refurbished? * rubbing hands together like evil genius. Perhaps.
Also some tip-zazz:
Make an account on newegg (im a fanboy, not an employee) because you can setup a wishlist on a few cards You're interested in. Then the newEgg robot seller(yeah the website is an actual autonomous salesman who will go the distance to get a sale...use it) will begin sending you sweet nectar deals to coax your chinese flea market wallet(peter russel: chinese vs Indian; you are the indian). Then strike with kung fu accuracy on major holidays. Kung fu is patient..so too, you shall be. do not confuse chinese accuracy with indian stubborness.
Never buy before the holiday, or at the beginning of the month. Wait until the last week of the month when they make room for new inventory.
research emerging products. the price of the old will drop to make room for the new; but only a month after the new product hits the shelf.
And most of all, sort Products by "most reviews".
More people who post about a product = popular item.
read feedback: overall, 6 months, 2 weeks; you may notice that product gets better current reviews than it did 6 months ago, because manufactures may have updated the firmware on it.
watch the percentage rates of 1-5 star
do exhaustive research, especially on low eggs for possible problems. to get the meat, sort posts by ownership level, highest rated, and most helpful.