Worth considering that this is being run in a really restrictive system or with a low power pump, OCZ Hydroflow with a flowrate of 162 L/hour thats 2.7 litres per minute 0.71 gallons (US) per minute, when Martin tested it with a DDC 3.2 with XSPC top it was flowing at 2.41gpm that is a huge difference. The Ek supreme is a similar story 0.55 gpm for the review 1.50gpm for Martin.

What this means is that on the whole these results are of little comparative value to people who run in higher flow systems to take that a bit further Martin saw a 3.5°C difference between OCZ and EK this review is seeing less than 1°C

So what this review shows is that the Alphacool block (and the Watercool Heatkiller blocks for that matter) perform well for low flow systems, since this is what a lot of the European water coolers are historically using it makes sense that a block is optimised for better performance at lower flows when targeting a European audience.