A Full cover block for Radeon HD 4890.
High performance water block for Radeon HD4890 reference graphic cards.
Base is made of electrolytic copper. Top is made of quality POM Acetal. The sealing is preformed by quality rubber washer. Block is mounted with enclosed M3x8mm screws.
Fittings can be used on both side of the block (up and down), the 2 plugs are enclosed!
Block does NOT come with fittings! They are available in options below.
Installation Manual
Total Reviews: 1
Average Rating: 
Outstanding Product
06-14-2009
Reviewer: Steve M (1)
I have two HIS Turbo 4890s running at 900 Mhz (overclocked 50 Mhz from the factory). The cards used to run about 65C idle and about 71C fully at 70% load. VERY hot devices, I could nearly burn myself if I touched the heat sink.
With two of these set up, I''ve been seeing about 32C at idle and about 40C at full load, a MUCH welcomed difference.
Installation was extremely easy, just follow the instructions. Between both cards, it took me about 30 minutes to attach these.
They come with all of the hardware you''ll need--Mounting Screws, 2x Plugs w/gaskets, (no barb fittings).
It comes with thermal tape, but there isn''t enough to cover all of the memory chips AND the power regulator. It is kind of awkward, but I ended up putting thermal grease where the tape wouldn''t go.
Very good product, A+++