ATI Radeon HD4870 X2 Video Card

[Aakarshan.d]

hi there Can anyone provide some reviews regarding ATI Radeon HD4870 X2 Video Card?
as i m about to buy this car for my computer so please provide some information regarding this video card?

[Archibald]

The Radeon HD4870X2, sporting a pair of ATI/AMD's powerful 4870 (Radeon 770) GPUs. This dual slot card is intended to provide gamers with the power of a dual video card Crossfire setup in a single unit, and features a huge 2GB of onboard GDDR5 video memory, enough to keep both GPUs fed and happy.

The Radeon HD4870X2, is an interesting price entry point, considerably lower than nVidia's original price for the geForce 280, which the twin HD4870 GPUs are aimed squarely at dethroning.


The HD 4870X2's two Radeon 770 GPUs are to be overclocked at the default 750Mhz, and the GDDR5 memory at 900Mhz.

Bolstered by 2048MB of GDDR5 memory, the 4870X2 GPUs feature 1600 stream processors (800 per individual GPU) and support for quad crossfire, directX 10.1 and shader model 4.1. HDMI output with audio is supported, as with all of ATI's latest video chipsets. Dual-link DVI is, of course the default output, but a DVI-to-analog adaptor is bundled with the card.

As you would expect, the HD 4870 X2 is hungry for power. The card requires dual-PCI express power connectors, and prefers one of them to be 8-pin (though two of the standard 6-pin PCI-Express power connectors will work just fine). Maximum resolution through either or both DVI video outputs is a whopping 2560x1600 pixels - this baby was made for wide screen gaming.

With two high-end ATI GPUs on board, you'd expect the HD 4870 X2 to be a big card, and you'd be right. This beast measures an impressive 27cm from tip to tip, and weighs in at 1.1KG. The card uses a dual-slot cooler, so it will take up the space immediately under your PCI-express slot. The cooling solution uses the now familiar squirrel cage fan design that puffs hot air out the back of the case. It's the same approach seen in high-end video cards from both ATI and nVidia. Thankfully, the 60mm fan on the HD 4870 X2 keeps noise to a very reasonable minimum much of the time. This is not a noisy video card by any means, unless the fan is running at 100%, which is good news.

The black plastic thermal duct covers a pair of skived copper heatsinks and several subsidiary aluminum heatsinks for the memory and VRMs. A copper heat pipe helps balance the thermal load. All components are actively cooled by the fan, with the exception of the GDDR5 memory chips which get their own passive heatsink. During testing, we noticed that the back of this video card got quite hot, we'd estimate in the 60-70 degree Celsius range. This is not unique to the Palit card though, as most of today's high-end video cards get hot in the same place. Two GPUs makes for two hot-spots though.

[David23]

My view:

It has sensibly positioned the dual PCI-express power connectors on the face of the video card, rather than the end of it. This means that cable clearance will not be a problem in small to mid-size cases where optical drives butt up against the back of the card. Remember that you still need 27cm just to fit the HD 4870 X2 though, so get your tape-measures ready. ATI's crossfire connector is present and accounted for, on top of the card at the immediate front.

The HD 4870X2 covers the basics. I would have liked to have seen a second DVI-to-analog adaptor, but in reality, one is probably enough for most modern computer users. TV-out options are well covered with the included component output and HDMI dongles. HDMI audio is supported by the card without the need for a separate cable.

[Birdie]

Check this one:

ATI Radeon HD4870x2 gives dual GPU greatness for the gamer enthusiasts. This is already true with ATI's Radeon HD4800 series of graphic cards.

The Radeon HD4780s are much much cheaper than equivalent cards from Nvidia. In fact Nvidia knew this, and immediately slashed its prices across its entire range of mid to highend Geforce cards.


It's a graphics card with dual GPUs on a single PCB board and equipped with 2Gb of GDDR5 ram.


Sapphire being board partners with AMD/ATI are among the first to release the Radeon HD4870x2. It features dual R700 GPUs on a single PCB board, which runs at 750Mhz with 2Gb of GDDR5 memory running at 1.8Ghz (2x900Mhz). The whole card is longer than most standard graphics card, and is very similar in shape and size to its predecessor the HD3870x2. For cooling, the card has a huge stock cooler, with the heatsink running across the entire length of the card. Because of the large heatsink and cooler, the card itself weighs in at a massive 1.5Kgs. And to power this beast, the card needs two PCIe power connectors ... one 6-pin and one 8-pin. So a power supply of at least 700W is recommended, one that has both 6-pin and 8-pin PCIe power connectors.

AMD/ATI have really produced a graphics card that not only offers extremely great performance, but also appeals to a lot of gamers and enthusiasts both in terms of price and features.


Radeon HD4870x2 is performing with some outstanding performance, and turned out to be the gamer's and enthusiast's choice.

[kiLLer]

AMD production processes with its 3-series series cards, but performance observed was below what NVIDIA Family could offer.

The small manufacturing processes means a very large amount functioning of cores can be produced on a single silicon chip, which in turn leads to a large amount of lower costs to manufacture, and therefore less cost for all consumer. It is also measured that less heat will be produced, and allows higher clock speeds are expected. The option of including GDDR5 powerful support with this new core is a deadly combination, as the bandwidth is a significant improvement on the current NVIDIA of GDDR3.

The two RV770 cores are combined together on a single PCB, measuring a huge 28.5cm and weighing approximately in kilogram. A PCIe bridge chip lies between these two cores, and supports the PCIe express bus of the motherboard, which allows very high bandwidth for communication. Each core has exclusive access to 1GB of GDDR5, which for extremely large resolutions with large textures.

Another important thing that these cores share is the cooling substance . This is a reference design, and consists of two 400 gram solid copper heat sinks on each core placed in such a way that, it is been cooled by a large ‘squirrel cage’ fan. The memory is cooled from one side by this heatsink, but also cooled on the other end by a large black plate. It’s because there is an extensive amount of heat to face with.