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AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

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Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#151

Post by somebodythere »

brucethemoose2 wrote: post #107
londons_explore wrote: post #104

Earlier quoted context omitted.

An OS can easily run an app on each for a few milliseconds, look at the performance counters to see which ends up with more instructions executed, and then move the task to where it performs best. From time to time, it can retry the test, because software frequently changes what it spends time doing.

But apps like factorio are extremely dynamic, so thats either going to be flakey or its going to spend a lot of time/energy bouncing the process between cores. I wouldn't be too worried about this personally, as configuring the few really sensitive apps with ProcessLasso or Aniancy is pretty easy.

I don't think the average Factorio gamer is going to know that they should do this or how. They will just know that their new CPU which was supposed to have better gaming performance is doing very, very poorly.

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#152

Post by sitkack »

SketchySeaBeast wrote: post #112
doikor wrote: post #80

Earlier quoted context omitted.

So they can sell us a 7990X3D 6 months down the line for $1000

Does AMD have a history of this blatant of a move? That would be an Nvidia level of arrogance.

They are no longer the underdog, I would expect behavior parity with the other semiconductor vendors.

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#153

Post by WeylandYutani »

justsomehnguy wrote: post #97
Semaphor wrote: post #26

Related and also interesting: Ryzen 7950X3D with One CCD Disabled - The 7800X3D Preview https://www.techpowerup.com/review/ryzen-7800x3d-performance...

> Where AMD X3D is taking the wrecking ball to Intel is power consumption. Our simulated Ryzen 7 7800X3D is one of the most energy-efficient CPUs we ever tested. In gaming it consumes 44 W on average, while the competition is wasting a ton of energy to achieve the same FPS: 13900K (143 W), 13700K (107 W), 13600K (89 W)—all more than twice the power usage than AMD's new gaming gem. Wow. I don't needed such CPU now, bu…

I often game at night and less noise is definitely a point in favour to AMD!

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#154

Post by amrb »

perihelions wrote: post #33

AnandTech sees some intriguing regressions on certain benchmarks, https://www.anandtech.com/show/18747/the-amd-ryzen-9-7950x3d... ( "CPU Benchmark Performance: Simulation" ) Worst is Factorio, which is down -47% against the 5800X3D (a previous-generation CPU that also uses stacked L3 cache), on the benchmark "10K trains". Wonder what's going on there? - "We would have expected higher performance in our Factorio bench…

Its worth say that the 3D V-Cache is only on the left of the two dies, while the other is frequency unlocked.

Also linking my favorite tech reviewers benchmark they do some great Linux/tech videos also! https://www.youtube.com/watch?v=jNMcdIkef_c

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#155

Post by RetpolineDrama »

bee_rider wrote: post #123
jeffbee wrote: post #39

Earlier quoted context omitted.

In my experience you can tune the i9-13900K way down on power and barely notice or not at all. I wouldn’t be surprised if these benchmarks came out the same way on the Intel side with power caps set at 125W.

I feel like I must be asking a dumb question, because it is a pretty obvious one. But would it be better to just buy a lower-performing, lower-cost chip in that case? Does the silicon lottery they results in an i9 also result in better performance per watt?

> But would it be better to just buy a lower-performing, lower-cost chip in that case?

No, because the best silicon is reserved for the highest performance parts.

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#156

Post by highwaylights »

londons_explore wrote: post #104
brucethemoose2 wrote: post #100

Earlier quoted context omitted.

Its more of a fundamental scheduling issue. The unlike big/little cores OS has no idea what apps "prefer" cache or frequency.

An OS can easily run an app on each for a few milliseconds, look at the performance counters to see which ends up with more instructions executed, and then move the task to where it performs best. From time to time, it can retry the test, because software frequently changes what it spends time doing.

Affinity in the O/S?

A properties page for the executable with a checkbox for “favour stacked cache cores” or some such.

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#157

Post by baq »

noobermin wrote: post #144
londons_explore wrote: post #110

Lots of software could run in just 128MiB, especially if it could page stuff out to ssd. CPU's usually have a cache-as-ram mode that can enable this. Does this mean that systems where you can hot swap all the ram at once will be possible?

Let's be real, this just means now web developers can ship their own browser written in electron with the javascript interpreter written in nodejs, and that is literally what they will do with this.

still waiting for ie10 compiled to wasm so i can run my favorite activex in chrome

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#158

Post by Salgat »

I'm not a fan of how they park the slower CCD, since it means that the scheduler will try to force all processes onto the same CCD (regardless of whether it's for the game), instead of offloading the non-game workloads onto the other CCD. This is an issue if you run background tasks (such as streaming) or have multiple monitors setup for other things like browser etc.

Re: AMD releases a new flagship CPU for consumer market with 128M of L3 Cache

#160

Post by [deleted] »

varispeed wrote: post #133
mjh2539 wrote: post #92

Earlier quoted context omitted.

I mean...it's not in anyone's best interests for the only two companies in a given market to completely crush the other, right? It would be bad for consumers (increase in prices), bad for B2B (increase in prices), bad for workers (wage suppression), bad for for the market (monopolies eventually focus more of their efforts on rent-seeking than what made them profitable in the first place).

That is only your assumption. How is Apple crushing the laptop market bad for the consumers? Currently there is a paradox, that if you want to buy high quality and performant laptop and affordable laptop, Apple is very much the only option. No competition can come close. Sort of they got caught with their pants down as they stopped innovating just like AMD and Intel.

[deleted]
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