Radeon HD 4870 X2 

Released August, 2008
  • 700 MHz
  • 2 GB GDDR5

The included CPU waterblock seems to be good enough for mainstream processors but I have my doubts that the radiator can handle the 4870 X2 plus an overclocked and overvolted processor.
by techPowerUp! (Dec, 2008)
Still, for users who are not looking to do a lot of tweaking with their system and just want something that is fast and special the Sapphire 4870 X2 Atomic is definitely a cool toy.
by techPowerUp! (Dec, 2008)

Benchmarks Real world tests of the Radeon HD 4870 X2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Radeon HD 4870 X2

Cloud Gate Factor Data courtesy FutureMark

Radeon HD 4870 X2

Reviews Word on the street for the Radeon HD 4870 X2

The actual 3D performance gained is 2.8.

What People Are Saying Give it to me straight


The HDCP output features the usual HDCP+Audio, which allows easy setup of a media PC.
by techPowerUp! (Dec, 2008)
Also included in the package is a large software bundle, loads of cables and everything else you could imagine.
by techPowerUp! (Dec, 2008)


Both GPUs, the PCI-Express bridge chip, the memory chips and the voltage regulation circuitry is cooled.
by techPowerUp! (Dec, 2008)
The GDDR5 memory chips are made by Hynix and carry the model number H5GQ1H24MJA.
by techPowerUp! (Dec, 2008)

Multi card

CrossFire will work with any HD 4870 / 4870 X2 from any mamn The card has one six-pin power connector and one eight-pin power connector.
by techPowerUp! (Dec, 2008)
A single CrossFire connector is present to link this card to another HD 4870 X2 or HD 4870.
by techPowerUp! (Dec, 2008)


These overclocks are slim, I would have expected more from watercooling.
by techPowerUp! (Dec, 2008)
Back in HD 3870 times Sapphire released a special overclocked edition of the HD 3870 X2 called "Atomic.
by techPowerUp! (Dec, 2008)


The power consumption of Sapphire's card is the highest we have seen so far in the labs which is mainly because of the overclocked frequencies.
by techPowerUp! (Dec, 2008)

Specifications Full list of technical specs


GPU brand ATI
GPU name R700
Market Desktop
Clock speed 700 MHz
Is dual GPU Yes
Reference card None

raw performance

Shading units 1,600
Texture mapping units 80
Render output processors 32
Compute units 20
Pixel rate 22.4 GPixel/s
Texture rate 56 GTexel/s
Floating-point performance 2,240 GFLOPS


Memory clock speed 900 MHz
Effective memory clock speed 3,600 MHz
Memory bus 512 bit
Memory 2,048 MB
Memory type GDDR5
Memory bandwidth 230.4 GB/s

noise and power

TDP 286W
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