Newer has cut the cost of two upgrades from its MAXpowr range.
The cards are compatible with older Macs, including 7300-9600 Power Macs, and similar clone computers.
John Nelson, Newer's president, said: "We are in the position to take advantage of improvements in manufacturing and pricing, made possible through our partnership with Tri-M Technologies. We're able to pass along cost savings to our customers."
The MAXpowr G4 PCI 400MHz has been reduced by £96, from £425 to £329.
The MAXpowr G3 PCI 500MHz upgrade's price has been slashed by £116, from £445 to £329.
Newer's products are distributed in the UK by AM Micro (01392 426473).