PowerColor Introduces HD 4870/4850 Cards

"Soon to be released Powercolour 4800 series."

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PowerColor Introduces HD 4870/4850 Cards
TUL Corporation – today announced the new generation enthusiast graphics card – PowerColor HD 4870 and HD4850. Based on RV770 core chip, PowerColor HD 4870/4850 support GDDR3/GDDR5 high-speed memory, aim to deliver a superior visual performance.

PowerColor HD 4800 has adopted 55nm technology and is powered by ATI’s Radeon HD 4800 graphics processing units. For HD4870, its GPU and memory runs at 750MHz and 900MHz respectively with 512MB of GDDR5 on a 256-bit memory bus design, Memory data transmission rates up to 3.6Gbps. As for HD 4850, it’s equipped with 512MB of GDDR3 on a 256bit memory bus design, while the GPU and memory run at 625MHz and 1986MHz respectively.

PowerColor HD 4800 series offer Microsoft® DirectX® 10.1, PCI Express® 2.0, on-chip HDCP, built-in HDMI with 7.1 surround audio, and also with the support for Shader Model 4.1, Universal Video Decode 2, and ATI CrossFireX™ technology.

With all the aforementioned 3D graphic features, PowerColor HD 4800 series assure users of an incredible visual performance while the same time generously providing Dual Dual-Link DVI and H.264, VC-1 and MPEG-2 video encoding program output support to deliver an unsurpassed image on a high definition 30 inch LCD with resolutions of up to 2560x1600. All in users have even more choices for experiencing phenomenal 3D entertainment.
“PowerColor HD 4800 series brings the latest and greatest technology into a competitive product lines.” says Ted Chen, CEO of TUL Corporation. “PowerColor aims to satisfy the toughest customers’ demand; I believe we can do it with this new generation graphics.”

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Most Recent Comments

22-06-2008, 14:25:55

hey guys

im going to go dual loop in my Lian Li A71 (which is yet to arrive from ChilledPC......ordered it about 20 days ago - but meh) - neways....

1 loop = PA120.3, will go in roof, will cool CPU + grfx card. thats no probs

the probs im thinking i might have, is the second loop:

PA120.1, im thinking of having it in the rear of the case, attaching it where the 120mm fan is.

However......for you people who have had/seen the A71, i'm not sure a 59mm rad with a 25mm fan attached will actually FIT there without going over the mosfets.


The mobo is an asus maximus extreme, the stock waterblock has been taken off and replaced with custom water blocks for SB/crosslinx, NB, and mosfets, all have 1/2" barbs.

do you guys reckon that I might need to put the fan on the outside?

any help would be awesome - thx

23-06-2008, 10:55:49

tbh you really need to see the case to be sure but why not use a smaller rad like and xspc one - they are compact and would fit there a treat

01-07-2008, 15:21:41

Alternatively, you could mount the radiator on the outside and push instead of pull air through the radiator (small trade off).

There are already holes (visible in your picture) just above the fan that on my CM 1000 fit the 1/2 ID, 3/4 OD tubing as if by design.

This is how I plan on mounting my 120.1 radiator when it arrives later today!


01-07-2008, 16:51:52

ill provide the answer of how we with cybermaniac overcame this issue. Literally the rad wouldnt go inside, where the mobo exhaust fan is and we didnt want to have anything outside either. So


blue being the first loop and purple second.

01-07-2008, 18:21:11

hey ron.

here are some pics to indicate what we did (and to show what me n kataras did):


here are some more pics:


I'll be uploading more pics after we finish the second loop.

01-07-2008, 19:52:00

It looks like that bottom radiator is completely inside the computer case, not vented out of the case to dissapate the heat... is that right?

Assuming so, doesn't that adversely impact the efficiency of the radiator because the ambient air temperature (being used to cool the water) is being increased?



02-07-2008, 08:53:44

i'll be testing that on the next loop/leak test.

when i tested the loop (leak test) in a high ambient temp, the rad was fine, however, i've made a few adjustments to that setup as the rad seemed to have 1-2c higher ambient temps when it had a 40c case temp.

there are 2 120mm fans blowing into the case from outside, 2 fans pulling the air from those 2 fans into the HDD (as per A71 specs), and then i've also added a further 120mm noctua fan on the other side of the rad to keep things even cooler.

there are 9 fans in the system (low noise), 7 of them are on fan controllers, and the other 2 are on the mobo.

so the ambient temp should actually be rather low inside the case. due to the fact that the triple rad is on top of the case anyway, and the heat that is coming out of the grfx card (not a full water block), and the 120.1 will actually be taken away by the rear 120mm fan.

Essentially I've created a dual/triple heat zone. (I'll post more pics once the second loop is complete and I'm happy with it)

The only issue i can see thus far, is the heat from the rad being pulled towards the res/pump which will heat the ambient air inside the res thus increasing water temps.

02-07-2008, 12:21:06


there are 9 fans in the system (low noise), 7 of them are on fan controllers, and the other 2 are on the mobo.

It makes sense if you are moving that much air in/out of the case that the in-case ambient change from cooling that radiator should be expelled quickly enough.

Thanks for sharing your work.


02-07-2008, 15:50:35


pic like i promised

Hey guys, nice pics... coming along nicely. Can I ask, what kind of hoses are those? I used 1/2 ID, 3/4 OD clear vinyl from the local Home Depot and it is very stiff and difficult to work with and around (crowded in case).

It makes sense if you are moving that much air in/out of the case that the in-case ambient change from cooling that radiator should be expelled quickly enough.

Thanks for sharing your work.


I used 1/2" Clear High Flex Hose (XSPC) from watercoolinguk and used the PrimoChill Anti-Kink Coils 3/4"- Black to help the kinking + looks.

29-09-2008, 10:03:25

looks invloved!!!

but will look cool if you can pull itoff

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