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AMD's all-important Polaris10 "Ellesmere" ASIC is pictured up close in a 3-quarter PCB shot of the upcoming Radeon RX 480 / RX 470. The picture reveals the ASIC with a die that's significantly smaller than that of the 28 nm "Tonga" silicon. The "Ellesmere" die is built on the 14 nm FinFET+ process. The die is seated on a substrate with a 256-bit wide GDDR5 memory interface. This appears to be a common reference PCB between the RX 480 and the RX 470.
The RX 480 ships with a classy looking lateral-flow cooler that's longer than the PCB itself; while the RX 470 uses a more common fin-stack top-flow cooling solution. Of course both cards are expected to ship with custom-design boards and cooling solutions. The reference PCB draws power from a single 6-pin PCIe power connector, and uses a 6-phase VRM to condition it for the GPU and memory. Display outputs include three DisplayPort 1.4 and one HDMI 2.0a connectors. There are also unused traces on the PCB for a DVI connector, so it's likely that some custom-design cards could feature it.
View at TechPowerUp Main Site
The RX 480 ships with a classy looking lateral-flow cooler that's longer than the PCB itself; while the RX 470 uses a more common fin-stack top-flow cooling solution. Of course both cards are expected to ship with custom-design boards and cooling solutions. The reference PCB draws power from a single 6-pin PCIe power connector, and uses a 6-phase VRM to condition it for the GPU and memory. Display outputs include three DisplayPort 1.4 and one HDMI 2.0a connectors. There are also unused traces on the PCB for a DVI connector, so it's likely that some custom-design cards could feature it.
![](https://www.techpowerup.com/img/16-06-16/129a_thm.jpg)
View at TechPowerUp Main Site