Name	Price at Time of Review (£)	Rating	Comment	Additional Info	Supplier	Tel	Issue	Page	Additional comments, notes
Processor Upgrades
	Intel DX4 Overdrive	469	***	A lot of money for a small increase in speed.		Intel	01793 431144	5	119
	Intel Pentium Overdrive ( for 486 base system	219	*****	Excellent buy if you own a 486/DX2. Better value than 8Mb ram in some cases.		Intel	01793 431144	14	145	recommended
	Intel Pentium Overdrive (for P60 base system)	246	*****	Will give an older pentium a gratifying boost, but not to P133 standards.		Intel	01793 403000	19	121
	Intel Pentium Overdrive (for P75 base system)	246	***	You should buy 16Mb ram and cache before moving to this chip.		Intel	01793 403000	19	121
	Kingston Turbochip (for any 486)	95	*****	Great value and very flexible. Needs 16Mb ram and secondary cache, though.		Kingston	01252 303588	21	127