AMD Radeon RX 6800 vs RX 6800 XT: Hashrate |Overclocking | Profit | Ethereum

Cooling system

As we wrote earlier (in our review on the Rx 6800), AMD completely redesigned the cards in the new 6000 lineup!

The casing of the card is made of aluminum with some protruding silver accents that add contrast to the black metal.

It is certainly very important that AMD finally ditched the turbine -style design that it has been using for years.

Now we have a card with 3 massive coolers (which we are used to seeing from vendors such as Asus, MSI, etc.) – 90 millimeters each . Air from the fans is pushed out of the side of the card.

The main design difference between the RX 6800 and the RX 6800 XT is thickness. Both cards are the same size, but the 6800 XT is 2.5 slots thick and the 6800 is the standard design that takes up 2 slots!

On the front side of the card there is a Radeon logo, which, when turned on, lights up with red LEDs – an RGB zone.

This is another visual difference between the 6800 and 6800 XT – both RGB zones glow with red LEDs, but the logo lettering itself is silver on the 6800 XT and red on the 6800.

The map itself is quite large. Its dimensions are 27 cm x 12 cm.

Note that unlike Nvidia ( 3080 and 3090 ), AMD does not use the new power pins. The card has two standard 8-pin PCIe power connectors on the top edge of the card.

AMD “Navi 21″ uses an external USB 3.2 controller for the USB-C port supplied by Cypress Semiconductor under the number ” CYPD5137-40LQXI “. This controller provides USB 3.2 Gen 2 data transfer at 10 Gbps.

AMD Radeon RX 6000 series does not support SLI mode!

As for the rear panel – the backplate, this model has it! It is almost entirely silver, which increases the length of the card.

The backplate is made of metal and protects the card from damage during installation and use.

Internal cooling system

The copper plate is in contact with the GPU and memory, and the auxiliary aluminum plate conducts heat away from the VRM.

Both fins are in contact with an aluminum heatsink, which is blown by three 90mm coolers . The card supports the function of stopping coolers when idle or at low power consumption.

Detaching the radiator grill reveals a clean PCB.

AMD uses a 12-phase VRM GPU that is powered by the expensive 16-phase Infineon XDPE132G5D VRM controller. The GPU voltage is set to a 12-phase VRM configuration.

AMD uses DrMOS International Rectifier TDA21472 components on the Radeon RX 6800 XT, while the RX 6800 uses chips from Alpha & Omega Semiconductor.

The memory voltage uses a three-phase circuit controlled by the International Rectifier IR35217 controller.

The GDDR6 chips are manufactured by Samsung under the reference number ” K4ZAF325BM-HC16 ” and are designed to operate at 16 Gbps.

Built on the same TSMC N7 (7 nm) as Navi 10, the Navi 21 GPU occupies a 519.8 mm² die area and contains 26.8 billion transistors. The pinkish red tint that we saw on Navi 10 has disappeared.