[SOLVED] 3700x VS 3800x

Countgreen

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Jun 24, 2017
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I am currently looking to upgrade/ sidegrade. My 7820x is dying on me. So I'm stuck between the 3700x and the 3800x. Money is not an issue between the two. (I know its about a $50 between the two but I don't care) I am just looking for the most performance out of the box with PBO. I would assume that the 3800x is binned and will possibly use less voltage and draw less power. I will be paring it with 3000mhz or 3200mhz RAM. Thanks!
 

FullTank

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Apr 7, 2015
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thing is , they both almost identical on ~100ish range of fps, identical even in some cases, decide for yourself -
View: https://youtu.be/PAGQwWDyURI
, if i would be you, i would go for the 3700x since 50usd is just not worth the benefit which you will get in Some things, while Some others will get even.. +0.0 fps.. , for 20 or 30 usd i could consider it :/ (the less power thing on PBO , yeah if you looking to pay it off that way then it sure will, after 9 years or so..) < that is if 100% usage 8hours per day which you obviously will not do, basically you most likely will never will pay it off :( even if your energy bill is even something stupid like 48 cents instead of generic 12
 

Phaaze88

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I would assume that the 3800x is binned and will possibly use less voltage and draw less power.
Ehh, not true with these things. Don't look at them like you would with Intel's cpus.

How is your 7820X dying on you though? Simply curious, as I have one - bought it on launch day, and I even had Silicon Lottery delid it for me; still running fine.
 

Countgreen

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My 7820x ik s from silicon lottery. 4.7ghz @1.25v. Its unstable at that voltage. I need 1.3v for a sable 4.7 now and its generating a lot if heat...
My other question is what is temp diffrence between the two?
 

Phaaze88

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My 7820x ik s from silicon lottery. 4.7ghz @1.25v. Its unstable at that voltage. I need 1.3v for a sable 4.7 now and its generating a lot if heat...
Oh dear... sounds like the chip has degraded rather quickly.
What were you cooling it with, and what was the motherboard?

As I mentioned before, I didn't buy directly from them, but had them delid and bin it for me, but my current cooler isn't capable of handling it at the level they confirmed for me:
7820X4.60GHz4.30GHz4.10GHz1.237V

So I did what I could and got this instead:
7820X4.50GHz4.20GHz4.00GHz1.18V


My other question is what is temp diffrence between the two?
Between 3700X and 3800X? A few degrees perhaps? But the power and thermals are significant enough that the latter doesn't perform even 1% faster in most cases over the former.
 

Countgreen

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Its been hammered hard over a few years. I've run a few VM's on it for school, gaming, a few game servers, Folding at Home (Long before the COVID-19 stuff) and lots of multitasking on it. I've kept it at the OC because I kind of needed it. I have a custom loop right now. 2x360mm rads with an EK WB and a 2080 ti with EVGA hydro copper block.
 

Countgreen

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Yes. The Rad /Fans draw air up and out over the VRM's. I know its not my motherboard that's the issue though as the VRM's Never exceed 63-65C under 100%load. Nothing looks melted either.
 

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