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AMD Radeon RX 7900XT Circuit Board Alleged
Igor Wallossek share a first look at the design of the unreleased RDNA3 graphics card.
Igor doesn’t want to fight with leaks sharing various specs for AMD or NVIDIA GPUs. These have been everywhere lately, but the closer we get to the launch of a new series, the more accurate they become. Meanwhile, Igor managed to get the schematics for the new AMD Radeon card, supposedly the RX 7900XT. It could be a custom variant, though.
The layout confirms that the RX 7900XT is equipped with the AMD Navi 31 GPU with 7 chiplets. The board is powered by three 8-pin power connectors, which means a maximum output of 450W, he notes. This doesn’t rule out AMD using 16-pin 12VHPWR connectors, but so far we haven’t seen any indication of this.
Igor confirms that the RX 7900XT has a total of 24 GB of GDDR6 memory, which is located in groups of 4 around the GPU. The board is equipped with 21 voltage converters, which should be divided between GPU, memory, SOC and VDDCI.
The card is revealed to have four display connectors, three DisplayPorts and one HDMI. There is no information on the supported standard, but it is very likely to be DisplayPort 2.0 and HDMI 2.1 at this point.
AMD RX 7900XT is rumored to feature a full Navi 31 GPU with 12288 stream processors. The GPU uses one GCD (Graphics Die) and six MCDs (Memory dies). The 1-stack MCD is claimed to provide up to 96MB of Infinity Cache.
AMD already showcased its RDNA3 GPU in a short gameplay demo last month. The company has yet to reveal a launch date for its new Radeon RX 7000 series, but we may hear more once the Zen4-based Ryzen 7000 series of processors become available.
|RUMOR AMD NAVI 3X (RDNA3) GPU Specifications|
|Code names||“Plum Skipjack”||“Wheat Nas”||“Bright Pink Bonefish”|
|Manufacturing node||TSMC 5nm+6nm||TSMC 5nm + 6nm||TSMC 6nm|
|Architecture||AMD RDNA3||AMD RDNA3||AMD RDNA3|
|GPU package||Multi-Chip Module (MCM)||Multi-Chip Module (MCM)||Monolithic|
|Chip configuration||1x GCD + 6x MCD||1x GCD + 4x MCD||–|
|MCD||6x ~37.5mm²||4x ~37.5mm²||–|
|RDNA Working Groups (WGP)||48||30||16|
|Memory and Bus||384-bit GDDR6||256-bit GDDR6||128-bit GDDR6|
|Memory bandwidth||864 GB/s (18 Gbps)||576 GB/s (18 Gbps)||288 GB/s (18 Gbps)|
|Infinite cache||96 MB||64 MB||32 MB|
|PCIe interface||PCIe Gen5||PCIe Gen5||PCIe Gen5|
|Exit||Q4 2022||2023||To confirm|
|Rumored SKU||Radeon RX7900XT||Radeon RX7800XT||Radeon RX7600XT|
|All information based on rumours. (Updated: September 15, 2022)|