Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

I am giving up on Intel and have bought an AMD Ryzen 9950X3D

michael.stapelberg.ch

Post reply on HN
Print view View original

291–300 of 370 posts

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#291

Post by itvision »

Yeah, nice:

> I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer.

> Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction.

> After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.

It's been the bane of desktop AMD CPUs since Zen 1. Hopefully AMD will address this in Zen 6 but I don't have too much hope.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#292

Post by TinkersW »

itvision wrote: post #291

Yeah, nice: > I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer. > Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction. > After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.…

I wonder why the idle power is so high(55 watts), I have measured a beelink mini PC with an 8 core Zen4 when idle, and it was 10 watts.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#293

Post by rkrisztian »

itvision wrote: post #291

Yeah, nice: > I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer. > Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction. > After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.…

What are you talking about? AMD has been really good at the power efficiency department until the 3D CPUs that use extra power for cache memory that simply cannot be turned off. Plus, Intel started applying the 3nm fabrication process, while AMD is still at 4nm. But previously, Intel was at 10nm for a long time, see i9-13900K for example, while Ryzen went to 5nm much sooner, see Ryzen 9 7900x.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#294

Post by itvision »

TinkersW wrote: post #292
itvision wrote: post #291

Yeah, nice: > I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer. > Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction. > After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.…

I wonder why the idle power is so high(55 watts), I have measured a beelink mini PC with an 8 core Zen4 when idle, and it was 10 watts.

> I have measured a beelink mini PC with an 8 core Zen4 when idle, and it was 10 watts.

Zen APUs have no such issue.

My 7840HS idles at 3W when plugged in and around 0.5W when running on battery power.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#295

Post by itvision »

rkrisztian wrote: post #293
itvision wrote: post #291

Yeah, nice: > I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer. > Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction. > After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.…

What are you talking about? AMD has been really good at the power efficiency department until the 3D CPUs that use extra power for cache memory that simply cannot be turned off. Plus, Intel started applying the 3nm fabrication process, while AMD is still at 4nm. But previously, Intel was at 10nm for a long time, see i9-13900K for example, while Ryzen went to 5nm much sooner, see Ryzen 9 7900x.

Nothing, I'm making this up, except it's been confirmed by pretty much all desktop Zen users:

https://www.reddit.com/r/Amd/comments/1brs42g/amd_please_tac...

I don't bloody care that AMD CPUs seem to be more power efficient than Intel's. For most people their CPUs are completely idle most of the time and Zen CPUs on average idle at 25W or MORE.

Many Zen 4 and Zen 5 owners report that their desktop CPUs idle at 40W or more even without the 3D cache.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#296

Post by rkrisztian »

TinkersW wrote: post #292
itvision wrote: post #291

Yeah, nice: > I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer. > Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction. > After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.…

I wonder why the idle power is so high(55 watts), I have measured a beelink mini PC with an 8 core Zen4 when idle, and it was 10 watts.

It's the 3D cache, as I wrote in my other response. It has to be powered on at all times, so it affects even the idle power usage.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#297

Post by rkrisztian »

itvision wrote: post #295
rkrisztian wrote: post #293

Earlier quoted context omitted.

What are you talking about? AMD has been really good at the power efficiency department until the 3D CPUs that use extra power for cache memory that simply cannot be turned off. Plus, Intel started applying the 3nm fabrication process, while AMD is still at 4nm. But previously, Intel was at 10nm for a long time, see i9-13900K for example, while Ryzen went to 5nm much sooner, see Ryzen 9 7900x.

Nothing, I'm making this up, except it's been confirmed by pretty much all desktop Zen users: https://www.reddit.com/r/Amd/comments/1brs42g/amd_please_tac... I don't bloody care that AMD CPUs seem to be more power efficient than Intel's. For most people their CPUs are completely idle most of the time and Zen CPUs on average idle at 25W or MORE. Many Zen 4 and Zen 5 owners report that their desktop CPUs idle at 40W or…

Please someone flag the comment above for offensive language ("I don't bloody care")

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#298

Post by epolanski »

lucianbr wrote: post #286
epolanski wrote: post #236

Earlier quoted context omitted.

I always wonder: how many sensors are registering that temp? Because CPUs can get much hotter in specific spots at specific pins no? Just because you're reading 100, doesn't mean there aren't spots that are way hotter. My understanding is that modern Intel CPUs have a temp sensor per core + one at package level, but which one is being reported?

There's no way on Earth Intel hasn't thought of this. Probably the sensors are in or near the places that get the hottest, or they are aware of the delta and have put in the proper margin, or something like that.

I haven't said they didn't think about it, I'm just asking due to sheer ignorance.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#299

Post by rkrisztian »

itvision wrote: post #295
rkrisztian wrote: post #293

Earlier quoted context omitted.

What are you talking about? AMD has been really good at the power efficiency department until the 3D CPUs that use extra power for cache memory that simply cannot be turned off. Plus, Intel started applying the 3nm fabrication process, while AMD is still at 4nm. But previously, Intel was at 10nm for a long time, see i9-13900K for example, while Ryzen went to 5nm much sooner, see Ryzen 9 7900x.

Nothing, I'm making this up, except it's been confirmed by pretty much all desktop Zen users: https://www.reddit.com/r/Amd/comments/1brs42g/amd_please_tac... I don't bloody care that AMD CPUs seem to be more power efficient than Intel's. For most people their CPUs are completely idle most of the time and Zen CPUs on average idle at 25W or MORE. Many Zen 4 and Zen 5 owners report that their desktop CPUs idle at 40W or…

I can't confirm the 40W, my Ryzen 9 7900 (non-X) consumes 1W to 3W at idle on Windows 10.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#300

Post by mr_toad »

jml7c5 wrote: post #225
c0l0 wrote: post #65

I realize this has not much to do with CPU choice per se, but I'm still gonna leave this recommendation here for people who like to build PCs to get stuff done with :) Since I've been able to afford it and the market has had them available, I've been buying desktop systems with proper ECC support. I've been chasing flimsy but very annoying stability problems (some, of course, due to overclocking during my younger yea…

The big problem with ECC for me is that the sticks are so much more expensive. You'd expect ECC UDIMMs to have a price premium of just over 12.5% (because there are 9 chips instead of 8), but it's usually at least 100%. I don't mind paying reasonable premium for ECC, but paying double is too hard to swallow.

Trouble with enterprise is that the people buying care about the technology, but not the cost, while the people that do care about cost don’t understand the technology.

Some businesses (and governments) try and unify their purchasing, but this seems to make things worse, with the purchasing department both not understanding technology and being outwitted by vendors.

Post reply on HN