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Poll: Ryzen 7950X3D, 7900X3D, 7800X3D

Will you be purchasing the 7800X3D on the 6th?

  • Total voters
    191
  • Poll closed .
Y-Cruncher users, a simple question.

I think its obvious, but i'll check anyway.

On a 7800X3d - If the stabilty test fails on ' logical core 12 ' - am i correct in assuming that is core 6 ( if 1-8 ) / core 5 ( if 0-7 ) - same core basically. Each core being 2 threaded.

Tuning Curve Optimiser, so want to double check i'm reducing the correct core.

Thx
 
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Brizzles said:
Y-Cruncher users, a simple question.

I think its obvious, but i'll check anyway.

On a 7800X3d - If the stabilty test fails on ' logical core 12 ' - am i correct in assuming that is core 6 ( if 1-8 ) / core 5 ( if 0-7 ) - same core basically. Each core being 2 threaded.

Tuning Curve Optimiser, so want to double check i'm reducing the correct core.

Thx
Click to expand...
Yup. I created a little table (logical core numbers) for CO testing to make things a bit easier.

core 0 = 0/1
core 1 = 2/3
core 2 = 4/5
core 3 = 6/7
core 4 = 8/9
core 5 = 10/11
core 6 = 12/13
core 7 = 14/15
core 8 = 16/17
core 9 = 18/19
core 10 = 20/21
core 11 = 22/23
core 12 = 24/25
core 13 = 26/27
core 14 = 28/29
core 15 = 30/31
 
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LtMatt said:
Yup. I created a little table (logical core numbers) for CO testing to make things a bit easier.

core 0 = 0/1
core 1 = 2/3
core 2 = 4/5
core 3 = 6/7
core 4 = 8/9
core 5 = 10/11
core 6 = 12/13
core 7 = 14/15
core 8 = 16/17
core 9 = 18/19
core 10 = 20/21
core 11 = 22/23
core 12 = 24/25
core 13 = 26/27
core 14 = 28/29
core 15 = 30/31
Click to expand...
Nice one - Thx Matt
 
LtMatt said:
Yup. I created a little table (logical core numbers) for CO testing to make things a bit easier.

core 0 = 0/1
core 1 = 2/3
core 2 = 4/5
core 3 = 6/7
core 4 = 8/9
core 5 = 10/11
core 6 = 12/13
core 7 = 14/15
core 8 = 16/17
core 9 = 18/19
core 10 = 20/21
core 11 = 22/23
core 12 = 24/25
core 13 = 26/27
core 14 = 28/29
core 15 = 30/31
Click to expand...
I done the exact thing on my phone. It comes in handy.
 
LtMatt said:
It took me weeks to get things properly dialled in, but it’s a good feeling when you know it’s done and you no longer have to worry about any stability issues (if you did it properly). To clarify, when I say weeks, I mean curve optimiser hand tuned each core for 100% stability, whilst using as much negative offset as possible.
Click to expand...

Hey Matt, what is your total package power at complete idle, as reported by HWinfo? I'm curious to see the difference between stock and a fully tuned 7950x3d.

Cheers
 
Dave2150 said:
Hey Matt, what is your total package power at complete idle, as reported by HWinfo? I'm curious to see the difference between stock and a fully tuned 7950x3d.

Cheers
Click to expand...
I’ll have to check and get back to you, but it varies depending on what profile I’m using. I have my tuned profile with clocked memory etc, then I have a low power profile running memory at 5200Mhz and other voltages and power limits lowered.
 
LtMatt said:
I’ll have to check and get back to you, but it varies depending on what profile I’m using. I have my tuned profile with clocked memory etc, then I have a low power profile running memory at 5200Mhz and other voltages and power limits lowered.
Click to expand...

Cheers. I'm curious as I may make the time to do this properly, though only if it's a ~10w+ saving at idle, else I won't bother. At full gaming load, it sips power anyway. Hilarious seeing Diablo4 running at 50W for example :D
 
RavenXXX2 said:
What's 3d like in windows 11, is it as responsive as a raptor lake system, could you tell the difference in a blind test.
Click to expand...
I've got both rigs booting off a 1TB 990pro, can't tell a difference in windows11.

In games, also can't tell a difference (playing 4k with a 4090), if you record 1% lows they trade blows depending on the game, but 99% the same.

Biggest difference is power consumption. X3D is monstrously lower power consumption in games compared to Intel. But Intel has around 20w lower idle and in very low load applications. This is at stock for both.
 
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Dave2150 said:
Hey Matt, what is your total package power at complete idle, as reported by HWinfo? I'm curious to see the difference between stock and a fully tuned 7950x3d.

Cheers
Click to expand...
Dave2150 said:
Cheers. I'm curious as I may make the time to do this properly, though only if it's a ~10w+ saving at idle, else I won't bother. At full gaming load, it sips power anyway. Hilarious seeing Diablo4 running at 50W for example :D
Click to expand...
36W with my overclocked profile, 6200C26 @1.59v VDD and VDDQ 1.41v.

 
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LtMatt said:
36W with my overclocked profile, 6200C26 @1.59v VDD and VDDQ 1.41v.

Click to expand...

I get 33w stock, with EXPO 6000Mhz C30, cores on stock voltage. I thought undervolting with curve optimizer would have some effect on idle package power wattage at least? Or is it only at full load that power consumption is reduced?

7Z1WDYa.png
 
Dave2150 said:
I get 33w stock, with EXPO 6000Mhz C30, cores on stock voltage. I thought undervolting with curve optimizer would have some effect on idle package power wattage at least? Or is it only at full load that power consumption is reduced?

7Z1WDYa.png
Click to expand...
Sounds about right. I think with my low power profile it drops 10W or so but I'd have to check.

I think it might reduce idle power draw a little bit, but curve optimiser is reducing core voltage, not SOC/MISC voltage.

The higher idle power draw comes from the SOC/Chiplet, not the CPU cores which draw about 0.2 watt per core at idle give or a take.
 
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rchads89 said:
Curve Optimiser @ - 31 all cores / c30 6000mt/s. Been idling/ light loads all day with no issues aswell.
Click to expand...
Brizzles said:
Still more in the tank i think.

LG1uzNt.png
Click to expand...
That’s a very good luck getting -31. My two best cores on CCD1 can’t get passed -25 but other 6 on -30.

Is it ok to go past -30? I thought -30 was max. If so I can push a bit more maybe.
 
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