I did some testing tonight... my 3900x runs almost stable with 0,95V ... the difference: Idle: 20W less, single thread 30-35W less with 18% performance loss, multithread up to 116W less with 14% less performance. The difference to my previous postet results is, that they were aquired on a kind of 'naked' system and meanwhile there are tons of backgroundservices chewing off a bit... 🙂 oh yeah i forgot, that under Prime95 the max temp. dropped to 46°C xD - so, im eager to try 0.7V tonight.

These XT models basically suck for value. I'm glad I didn't wait for their release date and I went ahead and built 3 weeks ago instead. $328 for a 3800x with a free Wraith prism cooler? Still feels like a good deal after this refresh release.

Mineria:

Probably lower voltage and water, some of these chips run stable below 1.3V But unless a longer test is run I wouldn't put a bet on it being stable.

My stock 3800x settles in and runs all 8 cores @ 4.1Ghz under load, seemingly all day long. Which I suspect is the baseline average one could expect. Here's a 12 minute stress test as I tried to nail down a silent fan curve. If I saw a graph like this running at 4.7ghz, that would be impressive.

Mineria:

Which games will get great benefits from 8/16 over 6/12 this year, next year? Both the 10600K as the 3600 will be fine for gaming only for the next 2-3 years, games won't magically utilize 8/16 over night. You can of course go with 3700X instead of the 10600K to have 8/16, but for pure gaming the i5 does perform better, if we include streaming, sure, more cores do help.

2-3 years ago 7700k was the best cpu and look where are we now. By then we'll be long into next generation of cpus and gpus. There is already few games utilizing 8cores im sure there will many more.

who need an XT if my X is scoring better at stock https://valid.x86.fr/38u27t Single-Thread 549 Multi-Thread (24T) 8404

So many are missing the point here .... Anyway the prices of the older models are down lads so I call this win Don’t like it don’t buy it simple really .

DG21:

I did some testing tonight... my 3900x runs almost stable with 0,95V ... the difference: Idle: 20W less, single thread 30-35W less with 18% performance loss, multithread up to 116W less with 14% less performance. The difference to my previous postet results is, that they were aquired on a kind of 'naked' system and meanwhile there are tons of backgroundservices chewing off a bit... 🙂 oh yeah i forgot, that under Prime95 the max temp. dropped to 46°C xD - so, im eager to try 0.7V tonight.

Mind putting up the BIOS and AMD tool settings used for the different speeds/temps when you are done?

0blivious:

These XT models basically suck for value. I'm glad I didn't wait for their release date and I went ahead and built 3 weeks ago instead. $328 for a 3800x with a free Wraith prism cooler? Still feels like a good deal after this refresh release. My stock 3800x settles in and runs all 8 cores @ 4.1Ghz under load, seemingly all day long. Which I suspect is the baseline average one could expect. Here's a 12 minute stress test as I tried to nail down a silent fan curve. If I saw a graph like this running at 4.7ghz, that would be impressive.

Same as my 3700x with PBO and everything on auto, OCCT6.0.0 all core test pushes it up to max 62C PBO disabled and setting TDP limit to max 1.28V it can easy do 4.3Ghz on all cores with lower temperatures, I prefer to have it clock down to 3.6Ghz when the cores aren't pushed to get close to water temps though.

Personally, I would recommend against all XT chips. Performance difference is marginal at best, but you reset those discounted price to MSRP and in case of 2 out of 3 CPUs also buy a cooler. And actually, I would highly recommend 3600, 3700X or 3900X ad alternatives. Yes you lose little bit more performance, but you get a lot lower price. 3600 is 170USD part, while 3600XT is 250USD. And if you really need more work performance, 3700X is 270USD and productivity wise demolishes 3600XT. And 3800XT is is just few percent better than 3700X but costs 400USD. If 3700X is not enough, 3900X is just like 422USD on Amazon and again blows it out of the water, plus comes with stock cooler. And if you are really after gaming FOS and don't care about value, then why are you even talking about AMD, get 10600K, overclock it and it will either perform same or better. Plus where it is better it is still far more noticeably better than XT parts are. And don't get me wrong, I love what AMD did with Zen2 and recommend it. But they will need to make sense for me to recommend them. As for only place I see those usefully, it is with overclockers and tinkering, because they will allow you to do more. Or if you like to "play" benchmarks instead of games. Which is fine, but I can't see this being major usecase. So yeah, get best value and don't pay for extra letters, about 50USD for each and +1-4% performance.

3600X 4.75Ghz on a single core

Quite interesting... Zen2 architecture is capable of these massively high clocks... just not in the entire chip at the same time. I wonder what kind of design error they did that prevents that ? Maybe the power delivery substrate layers are insufficient to provide consistent energy to all the cores at the same time, or it just gets way too hot internally. Here's hoping that Zen3 can actually do ALL-core overclocks of 4.5+ with ease !

Another reason these benchmarks do not make sense to me. XT performed a bit lower in the time spy CPU score, but it overall beats the X variant in the total score. How is that if it performs a bit slower yet it is considered higher performing in the overall score? Less means more now??

Mineria:

Under full load, 75 Degrees C with the Kraken X62, no thanks

My 3900X runs hot as hell honestly. My 3960X is cool as a cucumber in comparison. This is with a 480mm radiator, 280mm and a 120mm on my 3900X. It can hit 80C while folding. GPU (5700XT) doesn't touch 60C on the same loop. Typical temps are around 31-65 under regular loads and not folding and or doing crazy intensive CPU work.

this launch should be a good way for AMD to increase prices for each CPU segment imho 4000 series will be 50-60$ more expensive at launch against their 3000 counterparts when those were released, example 199$ for r5 3600 against 249$ r5 4600 The weird thing is 3800XT (no cooler) is almost same price with 3900X (wraith prism!!!), disabling 4 cores 3900x will be much faster than 3800XT due to having 64MB of l3 cache

DeskStar:

My 3900X runs hot as hell honestly. My 3960X is cool as a cucumber in comparison. This is with a 480mm radiator, 280mm and a 120mm on my 3900X. It can hit 80C while folding. GPU (5700XT) doesn't touch 60C on the same loop. Typical temps are around 31-65 under regular loads and not folding and or doing crazy intensive CPU work.

The problem is the heat don't transfer that easy out. I' got pretty much the same oc result on my 3900x with stock cooler and Ek water with 2x 360 radiators. Biggest difference is quiet vs crazy loud at load 😀

I've said it before - not for current ZEN 2 (or even ZEN+) owners. But if you've been delaying an upgrade, this might be the time to do it. Although ZEN 2 parts might get cheaper towards the year end as ZEN 3 draws near.

this is annoying the price of the 3900x has gone up not down after the release of the XT model had everythink apart from the cpu bought

Resellers perhaps and existing stock as there's a bit of room between the 3900X and 3900XT with possibly a bit more still from price variance and regional pricing differences. Not unexpected but unfortunate although apparently the XT is different silicon from the X so as long as AMD keeps manufacturing them hardware availability should be solvable though the pricing can be a problem for whenever that normalizes down to at least closer to MSRP whenever this happens.

iancook221188:

this is annoying the price of the 3900x has gone up not down after the release of the XT model had everythink apart from the cpu bought

If your board is one of those promised Zen 3 support then I'd suggest just buying the cheapest chip that cuts it for you assuming you don't immediately need the 24 threads, then upgrading on Zen 3's launch "later in the year" (perhaps early next year).

The 3700x is selling for $260 now, with a free AC:Valhalla game. Anyone on an older Intel, waiting for Zen 3. This is a test of your willpower.

wavetrex:

I'm willing to bet the exact opposite will happen, at least initially. The X models will get more expensive, as people rush to buy them (thinking they will disappear, replaced) instead of these lousy overpriced XT models, while at the same time AMD reduces production/release on "X" models, allocating more of the chips to the XT ones. By the time Zen 3 ( 4000 series ) launches, there will still be a 60-70 $ / € difference between X and XT, for that amazing 2-3% single threaded extra and LOST OF A DECENT COOLER. Mark my words.

iancook221188:

this is annoying the price of the 3900x has gone up not down after the release of the XT model had everythink apart from the cpu bought

Call me Nostradamus and give me that wine...