As someone from Ireland, can I suggest that you don't shop off dabs..
Overclockers.co.uk are quite good, not the cheapest (cheaper than dabs, or used to be at least) Deliver to Ireland and have GREAT customer support.
Also if you don't want the hassle of building and ocing yourself they will build and oc your box for a very reasonable price... AND the oc is guaranteed for at least 1 year..
They also have specials every week.. Worth a look IMO.
Obviously it depends on your budget and wether or not you want to build yourself etc but this weeks special on built rigs are:
Ultima TUNDRA Intel i7 2700K 3.50GHz @ 4.80GHz DDR3 Limited Edition System [] @ THIS WEEK ONLY OFFER was £1549.99 inc VAT NOW£1349.98 inc VAT
System Specification
- Case: Corsair 600T - White
- Power Supply: PC Power & Cooling Silencer MK III 600w PSU - White
- CPU: Intel Core i7 2700K 3.60GHz @ 4.80GHz Sandybridge
- Motherboard: Intel Z68 (Socket 1155) DDR3 Motherboard ** B3 REVISION **
- Cooler: Custom Watercooling Loop
- RAM: 8GB DDR3 1600MHz Dual Channel Kit
- Hard Drive: 2TB HDD
- Graphics Card: Choice of the latest DX11 Graphics cards (580 for the included price)
- Sound: Realtek 7.1 Channel Sound (On-Board)
- Optical Drive: LG DVD+/-RW SATA Drive
Titan Decimator MKII Intel Core i7 980 3.33GHz @ 4.00GHz DDR3 System [] @ THIS WEEK ONLY OFFER was £1325.98 inc VAT NOW£1095.94 inc VAT
- Case: BitFenix Shinobi Case - Black
- Power Supply: OCZ ZS 550w PSU
- CPU: Intel Core i7 980 3.33GHz @ 4.00GHz
- Motherboard: Gigabyte G1 Guerilla Intel X58 (Socket 1366) DDR3 Motherboard
- Cooler: OcUK H2 Flo Extreme
- RAM: 6GB DDR3 1600MHz Dual Channel Kit
- Hard Drive: 500GB HDD
- Graphics Card: (selected a 560ti 2 GB for this one, you can get other options easily)
- Sound: Realtek Creative 7.1 Gaming Audio (On-Board)
- Optical Drive: LG DVD+/-RW SATA Drive
If they don't suit but the service is appealing then they will configure basically any custom build you want. there are possibly a few changes I would make, eg the PSU (No head room for dual GPU)
BUT they provide great machines, pre OC'd and Guaranteed to run 24/7 at the sepc said..
They also have bundles and obviously you can just buy parts on their own..
Now as for the main question... personally I would go for the 570 as the 448 core 560's are as expensive and will be less powerful in most cases (unless you get a stock 570 vs a pre oc'd 560 448)
The 570 *should* have more head-room if you want to OC it. Especially if you get one with a custom cooling option eg the msi Twin FrozR or anything with non-reference design.