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AMD Ryzen 9 3900XT

W1zzard

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The Ryzen 9 3900XT is the flagship of the new AMD Ryzen XT series. It comes with higher boost clocks and can sustain them better, which helps with single-threaded workloads. In our Ryzen 9 3900XT review, we also saw better overclocking and lower temperatures than on the original Ryzen 9 3900X.

Show full review
 
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For 80 dollars you get 1% more performance and no heatsink. What a deal, I'll take 2!
 
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The best thing about these CPUs is they will hopefully push the 3600 into the sub $250 Canadian range.
 
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Thats pretty disappointing. I have hoped for a 5% at least. But 1?
 
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I still maintain my view that it's just a way to low key increase prices on all Zen2 CPUs: release "new" chips with XT instead of just X, bump up the pricing, stop manufacturing X > profit.
 
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Oh, wow, for the price that's not a very interesting product... the benefits are not noticeable in most cases...
 

Melladozzz

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I think there is a small mistake with the 3900XT and 3800XT frequencies :
In the introduction 3900XT = 3.8-4.7 and 3800XT = 3.9-4.7. This values are inversed in the tests.
 
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What a snooze fest AMD :slap:
 
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I still maintain my view that it's just a way to low key increase prices on all Zen2 CPUs: release "new" chips with XT instead of just X, bump up the pricing, stop manufacturing X > profit.
The beauty in all this is that AMD doesn't have to do anything. Their 7nm node is so mature by now that they can get away with bumping up frequency +100 MHz on X line and maybe 300 MHz on non X CPUs, rename them to XT and voila, they have just risen profit margin on Zen 2 CPUs. This will also prevent Zen+ kind of discounts on Zen2 when Zen3 finally arrives. AMD is becoming new Intel.
 
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The only thing mildly interesting here is the increased efficiency of the XT model, probably a cut down 3950x or something.
Lower voltages.

The beauty in all this is that AMD doesn't have to do anything. Their 7nm is so matured that they can get away with bumping up frequency +100 MHz on X line and maybe 300 MHz on non X CPUs, rename them XT and voila, they have just risen profit margin on Zen 2 CPUs. This will also prevent Zen+ kind of discounts on Zen2 when Zen3 finally arrives. AMD is becoming new Intel.
Exactly, AMD will milk consumers that praised them exactly like Intel did.
 
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Looks like it runs far too hot (with the oc) mine has a much smaller gap oc 4.2 vs stock. Even if i were looking to buy one before, i most certainly wouldn't now. Did they screw up something with the ihs or maybe just poor bios.. hmm
 

W1zzard

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I think there is a small mistake with the 3900XT and 3800XT frequencies :
In the introduction 3900XT = 3.8-4.7 and 3800XT = 3.9-4.7. This values are inversed in the tests.
Fixed, will fix the other reviews too
 
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Really nothing interesting. But again most people would be waiting for Zen3 anyway
 
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Benchmark Scores i can finally play crysis
Hey remember when AMD fan boys made fun of the Intel 8086k that didn't even come with cooler? Well AMD just told them to hold our domestic budget light beer.
 
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Still not as fast as Intel in gaming
Seems like I've been reading this for like....ever:laugh:

C'mon Zen 3, lets put an end to this tired old trope.
 
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Oh...sad.

I was hoping they might have had something a bit more interesting, something maybe 5-10% over what the original models (3600X/3800X/3900X) gave....but 1-2%, that's kind of like a normal margin of error one would expect when benching. Doesn't really seem like the extra $80 or so is worth it on any of the XT versions.
 
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@W1zzard can you test the original 3900x heatsink with the new XT to see if it can sustain 4.4ghz all cores in a 33*C ambient temperature?
My friends claim it can but I highly doubt it...
And about the overclock, my 3900X reach 4.2 Ghz all cores at 1.1V without affecting performance and can get up to the clockspeed of the XT when I push the V core to 1.425. Looks like I got a lucky draw since I bought it first week at launch.
 

W1zzard

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can you test the original 3900x heatsink with the new XT to see if it can sustain 4.4ghz all cores in a 33*C ambient temperature?
There is no way my 3900XT can do 4.4 GHz all-core, period. Well, maybe in some light loads, but not Prime95 Small FFT
 
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There is no way my 3900XT can do 4.4 GHz all-core, period. Well, maybe in some light loads, but not Prime95 Small FFT
Yeah Prime95 is a no go with 4.4 ghz. Some samples can but that's not representative. I can do 4.2 Ghz just fine. I think it's wise to not include the cooler because (1) they can save tons of money and (2) not getting flamed both literally and metaphorically lolz.

Anyway, this is a non-sense product. Everyone should just get the 3900X at $400 then. Cheer ! and thanks for your hardwork.
 
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Benchmark Scores Faster than yours... I'd bet on it. :)
Thanks, as always, for the review. Please combine these next time... two different reviews of cpus with a simple bump in clocks seems like a waste of everyone's time when they could've been combined. :)
 
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Benchmark Scores I once clocked a Celeron-300A to 564MHz on an Abit BE6 and it scored over 9000.
The 3900XT is the dumbest of these three relaunches. XT's gains are marginal at best, and only even visible at all in single-threaded workloads.

HEY HERE IT IS ON A 24-THREAD CPU THAT NOBODY OUTSIDE OF MULTI-THREADED POWER USERS WOULD CHOOSE TO BUY.

At least the 3600XT makes a teeny-tiny bit of sense, even though it's 99.5% pointless against even a vanilla 3600.
 
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