Friday, October 23rd 2020
AMD Radeon "Big Navi" PCB Allegedly Pictured
Here's what is possibly the first picture of an AMD Radeon RX 6000 "Navi 21" reference PCB, which the company could use across its RX 6900 XT and RX 6800 series graphics cards. The partially built PCB has a possibly large ASIC at the center (masked out), surrounded by eight GDDR6 memory pads, confirming a 256-bit wide memory interface. There are two 8-pin PCIe power connectors, and a 16-phase VRM solution powering the card's 320 W typical board power. Display connectors on the board appear to include two DisplayPorts, one HDMI, and a USB type-C. There are also a handful headers handling the fans and possible ARGB LED illumination of the card. We also spy a 2-way switch, which could indicate dual-BIOS.
Source:
WCCFTech
24 Comments on AMD Radeon "Big Navi" PCB Allegedly Pictured
Before the flame war over blower coolers kicks off, I *know* they're worse than open designs with multiple fans for cooling the GPU but it's sad that the Big Navi won't have a blower option because sometimes getting 200W+ of heat directly out of the back of the PC is really heckin' useful.
For very quiet/silent builds, or for SFF builds where space is at a premium, the blower's single fan can cope well, depending on where you set the power limits, and you don't have to worry about adequate space, additional intake/exhaust clearance, and additional case cooling requirements for the motherboard, RAM, CPU caused by having an open GPU cooler.
(As for the "blower is better for SFF" argument, that is extremely dependent on your case, and not typically true with current SFF cases (Ncase, Ghost S1, Formd T1, etc.) provided you set them up correctly with the required fans. But there are of course cases where a blower is better.)
I'm not seeing how "almost identical" fits in the complete different board component layout, besides the "traditional placement" for VRMs next to the chips they feed, which applies to every recent card made in the last ~10 years. :\
Next wednesday is just the official unveil and at this point quite a lot of what's going to be unveiled has already leaked.
300W GPU is pretty much 240A at 1V ~ 1.2V.
edit: Similar doesn't even cut it close either the vrm layout is completely different and there has been some power delivery added between the gpu die and i/o, ram arrangement is different, and the pcb is very sparsely populated also. There are more differences than similarities and the differences are obvious.