While we are all waiting to see how the GeForce RTX 3080 will behave in the first reviews, new images of the "reference" PCB of the flagship models GeForce RTX 3090 and RTX 3080 emerge from the network, essentially what we will see on board the proposed graphics cards from NVIDIA partners and therefore also completely custom products.
Before moving on to the images in question, let's make a brief summary of the situation. The GeForce RTX 3090 and GeForce RTX 3080 Founders Edition use a PG133 and PG136 board design respectively, while the PCB design intended for graphics card manufacturers will be the reference one, namely the PG132, this for both GeForce RTX 3090 and GeForce RTX 3080.
As already known, the PCB of the Founders Edition (RTX 3080 in the photo above) has a completely different design from the reference cards: the latter has a shape that we can define "classic", while the FE from NVIDIA has a V design in the part back of the card as well as a different Power Stage.
Here is what the PG132 reference design of the GeForce RTX 3080 looks like:
Comparing instead the PCB reference (PG132) of GeForce RTX 3090 and RTX 3080 we do not notice substantial differences in terms of design, except for the NVLink connector present on the RTX 3090 which allows the Dual-GPU.
As expected, the GeForce RTX 3090 features a more "crowded" PCB and, offering 24GB of GDDR6X memory, mounts chips on both sides of the PCB (24 x 1GB chips); the GeForce RTX 3080 has 10GB of VRAM, but we remind you that NVIDIA should have a 20GB variant in the pipeline that could arrive after the debut of the AMD Radeon RX 6000 cards, we are waiting for October 28th.
Compared to the GeForce RTX 3090, the reference board of the GeForce RTX 3080 also loses some Power Stage (in addition to 6 capacitors), while as regards the power supply both use a double PCIe 8pin. Finally, analyzing the PCB of the GeForce RTX 3090 (we have no photos of the PG136) we note that even in this case there is further space for the Power Stage, a feature that undoubtedly suggests the (probable) arrival of the future NVIDIA Titan RTX Ampere.
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