Well, first off it's a new unknown node, so no one knows what to expect.Not sure why a 2105 Mhz is so amazing when my 2080 S can generate 2100 Mhz max on MSI Afterburner? These are supposed to be faster than the 2000 series.
Reference/Founders Edition cards can't surpass 375W. But I'm curious...how are you getting a lack of efficiency? The cards are literally performing that much more. At the same performance level as an RTX 2080, it wins out at 1.9x more performance per watt. So based on their graph, where the RTX 2080 got to 60fps with 240W, the RTX 3080 got to that same 60fps with 126W. Of course that's not entirely fair because you're comparing a card running at max clocks (least efficient) vs one with limited load (most efficient). But continue that curve and you end up with the 3080 hitting 105fps at 320W.I'm sure it'll use 450+ watts too, there's already reports that AIB 3090s have 3x 8pin power connections.... Guess Nvidia consumers don't care about efficiency anymore when it used to be a main part of their battlecry
P.S. Don't take a shortcut to thinking, make a false dichotomy logical fallacy and assume any criticism of Nvidia automatically makes me an AMD fan.... As if there are only two choices in thought
Is Samsung worse than TSMC in practice though? From what I've read, Samsung 8LPP has more relaxed design rules than TSMC 7N. That might allow you to pack in more transistors than a denser (on paper) but more restrictive process. If your die size for the 3080 is correct, it has around 45 million transistors per mm². Navi meanwhile, only has 41 million transistors per mm².This is made on an 8nm node from Samsung, which is just a refined 10nm. Samsung is also far worse than TSMC.
Well, I know when Apple had Samsung make some of their chips along with TSMC, the Samsung ones had higher power usage, and throttled more, so they sold them in their cheaper iPhone versions. Situation might be different with high performance chips, but that seems unlikely. Samsung is a cheaper option than TSMC. So if it performed as well or better than TSMC, why would the Ampere A100 cards be made by TSMC?Is Samsung worse than TSMC in practice though? From what I've read, Samsung 8LPP has more relaxed design rules than TSMC 7N. That might allow you to pack in more transistors than a denser (on paper) but more restrictive process. If your die size for the 3080 is correct, it has around 45 million transistors per mm². Navi meanwhile, only has 41 million transistors per mm².
The A100 has a massive amount of cache. As we know, memory cells are packed more tightly. The two chips aren't comparable.Samsung 8nm (Ampere RTX 3090) = 44.6 million transistors per mm2
TSMC 7nm (Ampere A100 HPC) = 65.6 million transistors per mm2.
Remember the 3090 isn’t a full fat die either. It has SMs disabled. I’d expect a similar situation as with the pascal Titan x and Titan xp. Eventual refresh with few percentage more cores and the full stack gddr6x bumping it up to 48GB@21Gbps.The A100 has a massive amount of cache. As we know, memory cells are packed more tightly. The two chips aren't comparable.
And of course, transistors are no good when unused. Nvidia has to disable 15% of the GA100's cores to reach acceptable yield. Now we don't know how many 3080s Nvidia has to make before they get one 3090. The fact that the two cards are launched concurrently does hint at excellent yield.
I think it's depends on what you're making. If you're making something like a Ryzen, where you're packing 36mb of cache into 74 mm², Samsung would lose hands down. If you're making a gaming GPU, then perhaps the greater flexibility in layout is a serious advantage.But with your knowledge, would you not say the TSMC 7nm appears to be significantly better than the Samsung 8nm even if not to the degree I stated?
"The RTX 3090 already looks like it will deliver incredible performance. Nvidia says it's 50% faster than the outgoing RTX 2080 Ti "
Oh dear!! -->
"3090 = $1499+ for 50% > 2080Ti"
3080 = $699+ for c25-30% > 2080Ti
So, Nvidia asking buyer to cough up an extra $799+ to get and extra c20-25% over the 3080 (i.e. that's including that extra memory) !!!
3090 price-to-performance is shockingly insane in comparison to 3080 !!!
I just built my very first pc, eveything is working fine except for the cpu cooler whenever I turn on the pc the cpu cooler turns on and start glowing but the fan doesn't spin. Is that normal? Does it start to spin when the cpu gets hot? I haven't checked the bios yet so I dont know if I should configure sth there or not.