Wednesday, September 21

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Daily News Stuff 21 September 2022

Petaflopmobiles R Us Edition

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  • Nvidia had its big announcement.  (AnandTech)

    Lots of stuff, but the most immediately interesting are the RTX 4080 and 4090.  (Tom's Hardware)

    The 4090, launching October 12, has twice the performance of the 3090 Ti - from 40 TFLOPs to over 80 TFLOPs - while being 20% cheaper.  Which would be more impressive if the 3090 Ti hadn't been priced at $2000.

    The 4080 will arrive in November in two models, with 12GB of RAM and 40 TFLOPs at $900, and 16GB of RAM and 48 TFLOPs at $1200.  That's a significant difference; either the 16GB model should be called the 4080 Ti or the 12GB model should be the 4070 Ti.

    While the base 4080 has the same compute power as the 3090 Ti at less than half the price, it also has half the memory and half the memory bandwidth.  Nvidia is making up for that by increasing the on-chip cache from 6MB to 48MB (and 96MB on the 4090).

    AMD did that with the Radeon RX 6000 range, and it worked pretty well.  The options for doubling bandwidth over the 3090 Ti are pretty much restricted to HBM, which isn't exactly cheap.  On the other hand, moving from Samsung's 8nm process to TSMC's 4nm meant Nvidia had a huge number of transistors to play with - up from 28 billion on the 3090 Ti to 76 billion on the 4090 - so using five billion or so on cache was not a hard call to make.

    While $900 for the smaller RTX 4080 looks good compared to the $2000 3090 Ti, it doesn't look nearly so good when compared with the $700 RTX 3080, and gamers don't seem to be happy.  It's about 30% more expensive and offers about 30% more performance.

    Oh, an interesting point: They're PCIe 4.0.  Which means they'll work fine with my Bae case, though the standard 4090 might not fit.

Tech News



RTX 4000 Roundup Video of the Day




Disclaimer: 16 is the new 12.

Posted by: Pixy Misa at 10:30 AM | Comments (4) | Add Comment | Trackbacks (Suck)
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1 "The 4080 is nearly twice as fast as the 3080 Ti in Microsoft Flight Simulator and more than twice as fast in Cyberpunk 2077, for example."
I read something about how those may have been done with DLSS 3, and if so, they aren't apples to apples tests, so this is *definitely* a "wait for the reviews" situation.
Personally, I'm happy with my RX 6800--except for the part where it crashes a lot, and it's on the way to Gigabyte for repairs now.  If they fix it, I'll almost certainly sit out this generation.  I've already decided I'll probably sit out the CPU generation, too, since I'm on Alder Lake and Zen 3.

Posted by: Rick C at Wednesday, September 21 2022 11:19 PM (BMUHC)

2 Also, four-friggin'-slot cards.

Posted by: Rick C at Wednesday, September 21 2022 11:23 PM (BMUHC)

3 Yeah.  My new case only has room for a 3.5 slot card, and even that would restrict airflow, so a 4090 is out unless there's a water cooled model.  Which there probably will be.

I'm going to see what AMD has to offer before I spend any money.

Posted by: Pixy Misa at Thursday, September 22 2022 02:07 AM (PiXy!)

4 Not fr nothin', but I got an old Matrox Mystique 220 in a box somewhere if you really need a graphics card that is quite old and not all that great!

Posted by: normal at Thursday, September 22 2022 09:08 AM (obo9H)

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Apple pies are delicious. But never mind apple pies. What colour is a green orange?




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