PowerLogix has announced the iForce, a G3 CPU upgrade for iMac computers.

PowerLogix claims the upgrade boosts the performance of an iMac 233 by as much as 150 per cent.

The iForce is compatible with older, pre-slot-loading iMacs, and will ship in two models. The iForce 400Mhz upgrade has a 512K backside cache running at 200Mhz. The 500Mhz upgrade has a 1MB cache, also running at 200Mhz.

The product is expected to ship in the US later this month. Channel Dynamics (0870 607 0540), PowerLogix’s UK distributor, said it had received little detail about the product, and tentatively suggested the end of June for UK shipments. Pricing in the UK has not yet been announced.