Introduction (Cont’d)

We removed the video card cooler to take a look. As you can see in Figure 5, the cooler base is made of copper, using two thick copper heat-pipes to connect the base to the aluminum fins.

Sapphire HD 4870Figure 5: Video card cooler.

In Figure 6, you can see the video card without its cooler. It uses eight 512-Mbit Qimonda IDGV51-05A1F1C-40X GDDR5 chips, making its 512 MB memory (512 Mbits x 8 = 512 MB). These chips have a maximum transfer rate of 4 Gbps (“40X” marking), which is equivalent of a 4 GHz GDDR5 clock or 1 GHz (4 GHz / 4) real clock. Since on this video card the memory was running at 900 MHz, there is a good 11.11% headroom for you to overclock the memories with them still inside their specifications. Of course you can always try pushing them above their specs. In Figure 7 we provide a close-up of the GDDR5 memory chips.

Sapphire Radeon HD 4870Figure 6: Sapphire HD 4870 with its cooler removed.

Sapphire Radeon HD 4870Figure 7: GDDR5 memory chips.

In Figure 8, you can see all accessories and CDs/DVDs that come with this video card, which includes a 2 GB USB drive (limited time offer). With the accessories that come with this card you can convert the video output to VGA, HDMI, component video and composite video, plus the DVI and S-Video connectors already present on the product.

Sapphire Radeon HD 4870Figure 8: Accessories.

This video card comes with three games inside a DVD called “Ruby ROM 1.1”: Call of Juarez, Dungeon Runners and Stranglehold. Programs that come with this video card include CyberLink DVD Suite (PowerProducer 4, PowerDirector 5 Express, Power2GO 5.5, Mediashow 3 and trial versions of PowerBackup 2.5, PowerDVD Copy and LabelPrint 2), Cyberlink Power DVD 7,3DMark06 Full, EarthSim and GameShadow.

Now let’s compare the Radeon HD 4870 specifications to its main competitors.


Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.