NVIDIA GeForce RTX 3090 and RTX 3060 GPUs Tested With Custom Memory BIOSes: Reduced VRAMs and Narrower Interfaces

While we’re proper on the verge of the following era of pc {hardware}, together with CPUs and GPUs, fascinating occasions stemming from current-gen elements are nonetheless lots abound. Just hours in the past, we realized that NVIDIA is planning a price-cut on RTX 3080 and RTX 3090 sequence graphics playing cards, and now, a brand new benchmark report has come ahead, evaluating completely different variations of the identical RTX 3090 card.PRO Hi-Tech, a Russian YouTube channel, obtained their arms on two customized BIOSes for the RTX 3090, each of which alter the cardboard’s reminiscence specs. Not solely that, however additionally they acquired a customized reminiscence BIOS for the 3060, as effectively.RTX 3090 with 20GB and 12GB customized BIOSes in CPU-Z | PRO Hi-TechThis is definitely one of many first software-based mods of its stature that we’ve seen for the RTX 30-series. Usually, excessive modifications are finished by way of bodily {hardware}, similar to changing the reminiscence modules current on the PCB itself with quicker or higher-capacity ones. RTX 3090 with customized reminiscence BIOSesRegardless, that is an fascinating experiment because the customized BIOSes don’t really make the GPU extra performant—as an alternative, they scale back it. PRO Hi-Tech check two completely different BIOSes that restrict the scale of the reminiscence and the bandwidth. The first customized BIOS affords 20GB of reminiscence working throughout a 320-bit extensive interface. Whereas, the opposite customized BIOS lowered the reminiscence dimension to 12GB throughout a 192-bit reminiscence bus.Keep in thoughts, the RTX 3090 really comes with 24GB of reminiscence out of the field. Memory speeds on each customized BIOSes are untouched at 21Gbps, however as a result of narrower interfaces, each see completely different fallouts of their total bandwidth. The unique reminiscence bandwidth for the RTX 3090 is 936GB/s, however the customized BIOSes take that quantity all the way down to 780GB/s and 468GB/s, respectively.Both BIOSes had been examined throughout a bunch of video games and put by means of 3DMark‘s Time Spy and Port Royal benchmarks. Speaking of Time Spy, the 24GB RTX 3090 nets 18,388 factors, whereas the 20GB customized BIOS mannequin achieves a rating of 17,686 factors. A extra drastic distinction is skilled with the 12GB mannequin that solely will get 13,996 factors in the identical check; a 24% lower over the unique’s (24GB) efficiency.RTX 3090 24GB vs. RTX 3090s with customized 20GB and 12GB BIOSes | PRO Hi-TechThe 12GB customized BIOS severely hinders the RTX 3090’s potential. We see a loss in efficiency of as much as 76–85% with it, whereas the 20GB mannequin barely performs about 5% worse than the unique. This might be the rationale as to why NVIDIA didn’t trouble with the rumored RTX 3080 20GB mannequin final yr, since it might carry forth such a huge enchancment in efficiency over the originals that it wouldn’t make sense.RTX 3060 with customized reminiscence BIOSMoving on to the RTX 3060, PRO Hi-Tech additionally examined the mid-ranger with a customized BIOS that disables 4GB of reminiscence. The unique RTX 3060 options 12GB of reminiscence working throughout a 192-bit extensive bus, however the customized BIOS limits that to only 8GB throughout 128-bit. Long story brief, the customized BIOS performs about 18% worse than the unique in video games.

RTX 3060 12GB vs 8GB customized BIOS mannequin in Watch Dogs Legion | PRO Hi-Tech

RTX 3060 12GB vs 8GB customized BIOS mannequin in Watch Dogs Legion | PRO Hi-TechNonetheless, since disabling 4GB of reminiscence basically turns off two reminiscence modules on the PCB (Ampere GPUs use 2GB VRAM chips), that leads to lowered energy consumption. PRO Hi-Tech didn’t present any sources or hyperlinks to get the customized BIOSes however, to be truthful, you don’t want them in any case. You can try their video beneath, although it’s in Russian and doesn’t have English subtitles.


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