Nvidia on Wednesday revealed the printed circuit board (PCB) design of its GeForce RTX 4090 graphics card and disclosed a few of the peculiarities of its new product. Because it seems, the corporate fully redesigned the voltage regulating module (VRM) of the cardboard by including a PID controller with a suggestions loop in a bid to make sure correct energy provide to the GPU and maximize its overclocking potential.
When totally assembled, Nvidia’s GeForce RTX 4090 Founders Version graphics card resembles its predecessor because it continues to make use of an in depth dual-fan cooling system that includes a unibody design. However the brand new product has a number of distinctive variations exterior and, extra importantly, inside.
Identical to earlier technology Founders Version graphics playing cards, the brand new GeForce RTX 4090 FE makes use of a really refined but compact PCB with a triangular minimize on its again (or its proper facet, relying on the way you have a look at it) that’s meant to maximise the effectivity of Nvidia’s stream by thermal design (which is additional boosted by extra large followers).
The PCB has a single 12+4-pin 12VHPWR further PCIe Gen5 energy connector that may ship as much as 600W of energy to the machine, but default BIOS settings don’t enable Nvidia’s GeForce RTX 4090 FE to attract greater than 450W. The board additionally comes with a 20+3-phase VRM (20 phases for the GPU, 3 phases for reminiscence), which is a slight enchancment from the 18+3-phase energy circuitry of the GeForce RTX 3090/3090 Ti FE.
Along with extra energy phases, Nvidia carried out a PID controller with a suggestions loop to cut back present spikes and drops, successfully stabilizing energy supply to its GeForce RTX 4090 Founders Version graphics card, experiences TechPowerUp. Nvidia says that its new VRM allows a considerably decrease energy administration response time with out quantifying it in absolute figures. A secure and clear energy provide is essential for stability beneath excessive masses and overclocked situations. The inexperienced firm calls this function ‘energy transient administration,’ which could be one of many methods it manages to push its AD102 graphics processor to three GHz with out overvolting it and utilizing excessive cooling strategies.
Along with enhancing the cooling system with extra large followers that present as much as 20% extra airflow and redesigning energy supply, Nvidia additionally makes use of new GDDR6X reminiscence chips with its GeForce RTX 4090 FE that eat much less energy. Whereas we are able to solely speculate how the ability consumption of DRAMs that includes PAM-4 signalings was decreased, we advise that Micron makes use of a thinner fabrication course of to make these chips, which routinely lowers their energy consumption. In the meantime, with colder reminiscence, the cooling system will higher quiet down the GPU, which suggests additional overclocking headroom.
Nvidia’s GeForce RTX 4090 Founders Version graphics playing cards will go on October 12 and can seemingly be a part of the greatest graphics playing cards, not less than for these prepared to pay $1599 per unit.
