CPUs > Quad-Core CPUs > 100 GBP to 199 GBP

Advantages: Fast, quad core, cool running, guranteed G0 stepping
Disadvantages: Q6600 can be had for half the price for only 266MHz less performance

...can confirm this using the Intel Processor Identification tool on their website. G0 means it runs cooler than the older B3 stepping but also is bound to overclock more. The bad news is that i's 2x the price of a Q6600 for only 266MHz more performance. As long as you can get yourself a G0 stepping Q6600 there doesn't seem a point in spending double on this Q6700, unless you want the 10x multiplier for something. Anyone who does video/audio editing, ...
...extra cores will profoundly be delighted with this CPU. It makes such a more sensible buy than going dual core. Games and program that don't take advantage of all cores will steal yield a snappier system as the Operating System can spread the load more evenly so you can play a game + encode a video all at the same time without it impacting performance. Boxed versions come with a 3 year warranty, OEM versions come with whatever the merchant offers, ... Read review

Advantages: Fast, Quality and Easy install
Disadvantages: Price, Compatibility

...for the price it may seam expensive but good searching could lead to you finding one for just over £100, and with AMD on your side you'll beat Intel hands down. I hope you find this review helpfully and for any other help on the Phemon just message me. ... Read review

Advantages: Cheap upgrade with great cache memory
Disadvantages: not the fastest or best, most Core 2's are much better

This is an okay machine that fails to ignite or excite you with its performance. I am still amazed that a quad-core can be only 1.86 GHz in memory. I mean so many good Core 2 Duos pack over 2 Gigs its a wonder you get this minnow. The E5320 has good bus speed of 1066 MHz and large cache memory of 8mb, performing well when doing work-related activities. However if you are after an entertainment machine to watch movies, play games or download stuff ... Read review

Advantages: ideal for intense computing environments
Disadvantages: none

...unbelieveable performance and The Dual-Core Intel Xeon processor 5100 series is ideal for intense computing environments, 32-bit and 64-bit business-critical applications and high-end workstation and Analysis in my mind Dual-Core Intel Xeon processor 5100 series-based platforms are expected to deliver up to 2.25 times the performance and 2.35 times the performance/watt of previous-generation dual-core Intel Xeon processors and realiable performance ... Read review

Advantages: Intelligent Power Capability
Disadvantages: none

These new processors deliver amazing performance and power efficiency.With four execution cores, the Intel® Core™2 Quad processor blows through processor-intensive tasks in demanding multitasking environments and makes the most of highly threaded applications. Graphics Video works Just SUPER.Keep it cool, and you should be able to do some over clocking. I turned my ASUS auto overclocking off since I really dont need to over clock (& void the ... Read review