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*** AMD "Zen" thread (inc AM4/APU discussion) ***
- Thread starter Boomstick777
- Start date
IF latency is one of the big issues with the chips though, we already have old articles analyzing the latency impact.
Going from 40ns within CCX to 140ns CCX to CCX has some pretty big performance downsides and they could easily reap some IPC gains by removing it. It's a shame too since core to core latency within the same CCX is really good too.
Going from 40ns within CCX to 140ns CCX to CCX has some pretty big performance downsides and they could easily reap some IPC gains by removing it. It's a shame too since core to core latency within the same CCX is really good too.
"Dreadful" Infinity Fabric is what makes 8C Zen pretty a epic achievement for AMD. They could have done a monolithic 8C, no doubt, but at what cost? What about Threadripper or Epyc?
Come on, even Intel is getting in on the glue love
They could have used the non IF dies for Threadripper and Epyc and connected them via IF because die to die they use PCI-E lanes for IF, the main reason they're probably doing the CCX design is to give them some kind of modularity when comes to making APUs, probably due to financial limitations since they don't have the financials to be able to design and ship many different dies like Intel does.
And when something comes with a 250% latency impact, it is pretty dreadful for that scenario.
And for Threadripper you have latency higher than dual socket Xeon systems because of it, it comes with plenty downsides.
And when something comes with a 250% latency impact, it is pretty dreadful for that scenario.
And for Threadripper you have latency higher than dual socket Xeon systems because of it, it comes with plenty downsides.
Nah just needs refining. They are already competitive and Infinity Fabric is the "glue that holds it all together. Truth be told Intel would love be able to offer multiple product from low-end all the way up to the server chips using the same 4c module configured by whichever configuration gives the end result.
The profit margins of all these chips in relation to R&d outlay ect is something Intel can only dream of. Does it have it's limitations, of course but it's a trade off for other reasons to be using IF.
It should only get better as they continue to refine it plus move to process node that wasn't design for low power draw..
The profit margins of all these chips in relation to R&d outlay ect is something Intel can only dream of. Does it have it's limitations, of course but it's a trade off for other reasons to be using IF.
It should only get better as they continue to refine it plus move to process node that wasn't design for low power draw..
They could have used the non IF dies for Threadripper and Epyc and connected them via IF because die to die they use PCI-E lanes for IF, the main reason they're probably doing the CCX design is to give them some kind of modularity when comes to making APUs, probably due to financial limitations since they don't have the financials to be able to design and ship many different dies like Intel does.
And when something comes with a 250% latency impact, it is pretty dreadful for that scenario.
And for Threadripper you have latency higher than dual socket Xeon systems because of it, it comes with plenty downsides.
Not sure where to start. But in your opinion AMD should limit themselves to a few more cores at the expense of core scalability and everything a coherent fabric brings just to deal with occasional inter core latency. I'm not sure if you have noticed but AMD are wiping the floor with just about all of Intel designs...
Don't say things like that now we're going to get a flood of pie charts, bar charts and all sorts.
The problem is though that the memclk is linked to the IF. They'll have to ensure that the IF can handle it or apply some sort of multiplier/divider.
Lol because in the real world Ryzen is performing very well and while it's not perfect, it's shaken up what was a pretty boring and stagnant market.
Like I keep saying it's 1st generation not 7th or 8th so their is defiantly room for improvement.
Like I keep saying it's 1st generation not 7th or 8th so their is defiantly room for improvement.
despite all
'Overall we’d still recommend TR over Intel CPUs unless you want absolutely tried and tested design which have already been patched by microcode and firmware/BIOS updates'
despite all the data linked the conclusion sums it up
'Overall we’d still recommend TR over Intel CPUs unless you want absolutely tried and tested design which have already been patched by microcode and firmware/BIOS updates'
I linked that to show the faults in IF, even good products can have faults, I'm not sure why it's so difficult for AMD fans to admit that some AMD tech does have some issues.
Nah Amd are perfect and holy in every which way
. Because that's how we roll.I know its not perfect but its not ****, its actually competitive and can only get better, I've just switched from Intel, I'm hardly an AMD fanboy, the chip works fine, the performance is good and I'll take its issues for the benefits I get from the platform on the whole.
Intel aren't perfect either, you can have a really fast chip that throttles under serious load due to over heating, even under water without a delid, great.
Intel aren't perfect either, you can have a really fast chip that throttles under serious load due to over heating, even under water without a delid, great.
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It's not really a fault if it's designed to function in that way. It's not like the chip designers plugged it in and went "Woah, didn't see that coming!". There's no doubt IF can be refined over time. But as it currently stands it works and even with its shortcomings is still taking the fight to Intels monolithic CPU designs.
IF itself is a solid idea, it just needs a few iterations to be streamlined.
Pointing out the issues is fine, but we all know if AMD copied Intels chip it would be slower and more expensive. The biggest issue Ryzen has is clock speed.
I don't think that's the patch you want to go given how AMD took a few design cues for Zen from Intel's Core, like the MicroOp cache
It's all irrelevant Intel could have continued along that road but they didn't, instead they moved on to a very successful architecture. Amd has made Infinity Fabric it's own and so far it looks like, they too have made the right decision.I don't think that's the patch you want to go given how AMD took a few design cues for Zen from Intel's Core, like the MicroOp cache
You have to play to your strengths and right now Amd are playing very well.
I don't think that's the patch you want to go given how AMD took a few design cues for Zen from Intel's Core, like the MicroOp cache
Not telling me anything I don't know. Would you be happier if AMD was slower and more expensive? because you seem really upset that AMD have done so well if Im honest.
It's not Amd it's the "fanboy's" that make him upset
. Nah obviously he likes Amd why else would spend money on something that would upset you.