Not true at all. Single thread CPU scores for Graviton2 are about half that of Intel, while only being about 20% cheaper at best.

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llm_nerd 3 days ago | parent | next [-]

Groan. Yes, absolutely true.

While I know this thread will turn into some noisy whack-a-mole bit of nonsense, an easy comparison is the c8g.2xlarge vs the c8i.2xlarge. The former is Graviton 4 vs Granite Rapids in the latter. Otherwise both 16GB, 15Gbps networking, and both are compute optimized, 8 vCPU machines.

Performance is very similar. Indeed, since you herald the ffmpeg result elsewhere the Graviton machine beats the Intel device by 16%.

And the Graviton is 17% cheaper.

Like, this is a ridiculous canard to even go down. Over half of AWS' new machines are Graviton based, but per your rhetoric they're actually uncompetitive. So I guess no one is using them? Wow, silly Amazon.

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electroly 3 days ago | parent | next [-]

The latter is a 4-core machine with 8 HyperThreads. This doesn't actually matter to your price-performance metric but is worth mentioning because it's the reason why the Intel part performs so comparatively poorly. They're fast chips, they're just wildly uneconomical. If you wanted to compare equal core counts (c8i.4xlarge vs. c8g.2xlarge), then the Intel instance type wins on performance but the Graviton is 58% cheaper.

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winrid 3 days ago | parent | prev [-]

Groan. Absolutely not. :)

c8g passmark score: 1853 c8i passmark score: 3008

I guess the fps column isn't a good representation of single thread score. Also looking at the passmark scores for i4i vs i4g, i4g is about 1k and intel is about 2k, and the more modern Graviton equivalent of i4 is the same price, so...

https://go.runs-on.com/instances/ec2/c8g

https://go.runs-on.com/instances/ec2/c8i

https://go.runs-on.com/instances/ec2/i4g

https://go.runs-on.com/instances/ec2/i4i

Silly amazon.

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llm_nerd 3 days ago | parent [-]

So confident. And exactly the whack-a-mole nonsense I predicted.

See the comment by electroly. They actually know what they're talking about.

See, the FPS score is for the whole machine. The c8g gives you 8 real cores. The C8i gives you 4 real cores, 4 hyperthreading pseudo-cores. So for those two machines the c8g unequivocally gives you more absolute computing performance, regardless of the passmark single thread (on a single core) on the c8i being better than a single core on the c8g. And the c8g comes at a big discount as well.

That's...the point. The Graviton processors are cheaper per core, and lower performance per core, and you make it up in bulk. You get more performance per $ if you're okay with the ARM stack and your software is good with it, and this is basically universally true comparing Graviton instances versus Intel/AMD alternatives.

You're wrong. Maybe cite some other random nonsense now?

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winrid 2 days ago | parent [-]

Single thread performance is important for many workloads. It's not nonsense. Things like index builds on an i4g vs i4i could be half as slow. That's really important!

I don't know why you continue to be a fucking asshole. It's just a hosting provider. Go touch grass.

	▲	llm_nerd 2 days ago \| parent [-]
		"I don't know why you continue to be a fucking asshole" Your very first comment was an obnoxious "Not true at all" to the absolutely, incontestably true statement that Gravitons offer better $/perf. So maybe you need to look in the mirror and go touch grass.

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wmf 3 days ago | parent | prev [-]

Do you realize we're talking about Graviton5 now?

	▲	winrid 3 days ago \| parent [-]
		The Graviton5 instances I've been comparing to intel are the same price...