AMD "Steamroller/Excavator" -info, speculations and experience

[demonkevy666]

http://linustechtips.com/main/topic/...cpus-from-amd/

sad if true

if this is the prelude of shifting towards HUMA and compilers could really make use of APU, perhaps 4 SR cores could have the performance of FP in 8 or even 12 core Piledriver..?

I can't believe you both think that's true. (it's debunked in that link =| )

Those are Sever road maps.

honestly it looks like Steamroller will be out in desktop first for once instead of launching severs first like they've been doing.

[vario]

I can't believe you both think that's true. (it's debunked in that link =| )

Those are Sever road maps.

honestly it looks like Steamroller will be out in desktop first for once instead of launching severs first like they've been doing.

Well, AMD always uses one die across the board.So it seems there will be no SR for AM3+,only desktop variants of these warsaw cores.
And yes SR will be first to desktop, but in kaveri form, so only 4 core APU for socket FM2.Thats disappointing .Well its intel time after AM3+ it seems, however if thats all true intel will do even less for even more in high end desktop :-/

[FlanK3r]

Yes, its some server roadmap...I hope, SR FX still come in 2014, AMD must to see enthusiast of brand. Maybe only 1-2% of AMD people but we are the people who have choice between i5/i7 and AMD FX. And therefore we take FX...

If not, all this people will have only one choice for main PC. Intel i5/i7 . APU maybe as second PC

[Darakian]

SR may well be APU only. We need more openCL apps for that to be a good thing.

[tbone8ty]

http://www.techpowerup.com/187726/as...-fm2-apus.html

asus FM2+ mobo

[Mechanical Man]

http://www.techpowerup.com/187726/as...-fm2-apus.html

asus FM2+ mobo

http://www.asus.com/Motherboards/A88XMA/

They up on website too. I hope kaveri is indeed Q4/13 at latest.

[EniGmA1987]

It is "officially" delayed till 2014 now according to VR Zone who got hold of internal documents.,

[tbone8ty]

http://wccftech.com/rumor-amd-phenom...-compatbility/

How this For a crazy fake amd cpu

[FlanK3r]

yes, some bull*hit

[Miwo]

so FM2+ still running dual channel ddr3? Dont see how we can expect big iGPU gains at higher resolutions without moving to quad channel ddr3 or ddr5. For the average user, its going to be way cheaper to buy a full set of 4 DDR1600 sticks then it is to buy 'botique' ddr2133+ sticks.

Is it possible to have quad-channel enabled on FM2+ chips, while retaining dual-channel on FM2 chips using the same motherboard? Speculating ofc.

[tbone8ty]

i can see the kaveri fm2+ boards having pci-express x16 gddr5 memory boards...that be kinda cool if possible...

[The Stilt]

so FM2+ still running dual channel ddr3? Dont see how we can expect big iGPU gains at higher resolutions without moving to quad channel ddr3 or ddr5. For the average user, its going to be way cheaper to buy a full set of 4 DDR1600 sticks then it is to buy 'botique' ddr2133+ sticks.

Is it possible to have quad-channel enabled on FM2+ chips, while retaining dual-channel on FM2 chips using the same motherboard? Speculating ofc.

The IMC is on the APU so the motherboard it is not an issue.
Currently the DCTs are either configured to 1x 128-bit (ganged) or 2x 64-bit (unganged) mode.
So 1x 256-bit or 4x 64-bit is not an issue either

[Mechanical Man]

so FM2+ still running dual channel ddr3? Dont see how we can expect big iGPU gains at higher resolutions without moving to quad channel ddr3 or ddr5. For the average user, its going to be way cheaper to buy a full set of 4 DDR1600 sticks then it is to buy 'botique' ddr2133+ sticks.

Is it possible to have quad-channel enabled on FM2+ chips, while retaining dual-channel on FM2 chips using the same motherboard? Speculating ofc.

The IMC is on the APU so the motherboard it is not an issue.
Currently the DCTs are either configured to 1x 128-bit (ganged) or 2x 64-bit (unganged) mode.
So 1x 256-bit or 4x 64-bit is not an issue either

Not to forget your recommendation stilt at muropaketti that pretty much confirmed quad channel (assuming you know it)

[Miwo]

The IMC is on the APU so the motherboard it is not an issue.
Currently the DCTs are either configured to 1x 128-bit (ganged) or 2x 64-bit (unganged) mode.
So 1x 256-bit or 4x 64-bit is not an issue either

Boom!

[EniGmA1987]

So 1x 256-bit or 4x 64-bit is not an issue either

What do you think would be theoretically better for gaming? With one 256-bit interface we would have much higher bandwidth, but four 64-bit interfaces should technically give the same total bandwidth between them all and allow for a greater amount of memory requests by different things simultaneously right? but each individual request would be a bit slower?

[The Stilt]

Currently all of the AMD CPUs & APUs use 2x 64-bit (unganged) mode by default so I see no reason why it would change.
Unganged DCTs are more flexible and possibly could be powered down in low power states.

Ganging up the DCTs would reduce the congestion in certain rare scenarios.
In case of 4x 64-bit DCTs these scenarios will never occur due the monstrous bandwidth.
At DDR-1600 and above the bandwidth will never be fully saturated anyway.

If we assume that the SR will indeed feature a quad channel dram interface, of course

[zir_blazer]

For Quad Channel, I suppose you will need at least 128 more Pins for the bigger bus width, after all, the big switch from Socket 754 to 939 during 2004 was supposed to be just to get Dual Channel in. This amount remained pretty much the same during the last decade, even thorough FM2 also throws 16 PCIe Lanes too. I don't know a lot about pin budget, because most are supposed to be power and ground anyways, but I seriously doubt that they can fit Quad Channel in the current Socket (FM2+ included). If Steamroller were to get Quad Channel, I would suppose you should expect a new Socket (Which Kaveri isn't for). Either that, or they seriously overprovisioned on pins 10 years ago, if Kaveri manages to do it on FM2+.

[imamage]

Is there any chance SR will still use AM3+ ?
If that isn't the case I probably go grab a FX-8300 before Christmas as my AM3+ platform Final upgrade.

I would love to see APU w/6Core but looks like AMD won't be able to make one

[radier]

If you count on any significant performance boost AMD must abandon AM3+ socket. Otherwise it will be another fail.

Wysłane z mojego GT-N7000 za pomocą Tapatalk 4

[Mechanical Man]

If you count on any significant performance boost AMD must abandon AM3+ socket. Otherwise it will be another fail.

Wysłane z mojego GT-N7000 za pomocą Tapatalk 4

On what basis. Its totally zero post if u dont base ur opinion in anything.

[radier]

Every significant jump in performance of modern CPU's (Intel/AMD) was based on new platform.

Backward compatibility is a myth. If you buy CPU strong enough it will keep up for at least 3 years (vide C2D, SB). Buying ty CPU and hoping for massive boost after upgrade to newer model over the same platform is a joke.

Wake up !

[demonkevy666]

Every significant jump in performance of modern CPU's (Intel/AMD) was based on new platform.

Backward compatibility is a myth. If you buy CPU strong enough it will keep up for at least 3 years (vide C2D, SB). Buying ty CPU and hoping for massive boost after upgrade to newer model over the same platform is a joke.

Wake up !

Are you just trolling or what ?

Core 2 duo was on the same socket that had, Prescott,Cedar Mill Smithfield and Presler Pentium D. Before Core 2 duo was even made.

[zir_blazer]

Are you just trolling or what ?

Core 2 duo was on the same socket that had, Prescott,Cedar Mill Smithfield and Presler Pentium D. Before Core 2 duo was even made.

Intel politic at that time was to force you to purchase a new Chipset for every new Processor release, so for Intel side guys you needed a new platform even if they shared the same Socket. Pentium D Smithfield required a new Chipset, it wasn't supported on earlier LGA 775 Pentium 4 Prescott Motherboards. So did Core 2 Duo, you needed yet another new LGA 775 Motherboard to use it, not Pentium D ones. If you look it that way, there is absolutely no difference if they share the same Socket if you ended up needing to purchase a new Processor and Motherboard together anyways. Only advantage was that at least Motherboards were backward compatible, so you could do a two-stage upgrade if you wanted to buy a new Motherboard Core 2 Duo compatible to use with your current Pentium 4/D THEN switch to a Conroe after saving more money.
Only AMD had Sockets that spawned several generations. Athlons XP Bartons were capable of booting and work even on 266 MHz Bus Socket A Motherboards without BIOS support. Socket 939 Dual Core K8 also were drop-in replacements to first generation Socket 939 Motherboards. Heck, even in Socket AM2, there were first generation Motherboards released before Barcelona that could even work with Phenom II X6 Thubans, and they did were capable of massive differences assuming you still were using a AM2 Dual Core K8. Backwards compatibility works, is just that few manufacturers would want that you can keep using the same Motherboard and put a new Processor because they need to spend money in BIOS devs to keep improving support yet they miss to sell new products. And both Intel and AMD are their partners. They also make and sell Chipsets to them, too, so the entire ecosystem is based on force you to change platform as often as possible, not single components.

[radier]

@demonkevy666

Learn the difference between socket and platform.

[EniGmA1987]

The majority of important performance things are in the CPU itself now anyway, so really the CPU is the platform. The chipset on the motherboard is pretty much just for I/O these days since memory controller, HT link bus, and PCI-E bus are all in the CPU.