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[Tech Report] AMD cuts A-series Desktop Processor Prices - Page 6

post #51 of 74
i might grab a 7850k now.

my home media computer could use a upgrade. It currently has a athlon x2 4000 with a 5450 passive graphics card. I like the new pricing.

Not that it requires tons of horsepower, but would be nice to fire up a few games from time to time for guests and such.
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post #52 of 74
I don't understand this "new, lower" pricing on the 7850. I paid $129 for the chip AND motherboard AND a BF4 voucher (sold on ebay for $20) for $129 back in Feb/March earlier this year. It's my secondary / test system... I wouldn't want to game on it but if I sat down someone in front of it they would probably be ok with it and 720p gaming. I've got too much master race blood running through my veins to tolerate that, personally.
    
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post #53 of 74
Carrizo which might be on 28-nm ET-SOI is ramping up at GlobalFoundries Fab 1. The price drops for Kaveri, are to equalize performance per dollar with Carrizo.

Carrizo costs less to fabricate, than Kaveri, but has more performance which brings higher value. It is also more energy efficient at a given clock and voltage.

Carrizo-L @ 15W = Kaveri2.0 @ 35W
Carrizo @ 45W = Kaveri @ 95W

Carrizo-L = 1 MB L2 per CPU cluster and 128 KB L2 per GPU cluster
Carrizo = 2 MB L2 per CPU cluster and 256 KB L2 per GPU cluster
Edited by Seronx - 10/22/14 at 1:55pm
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post #54 of 74
Quote:
Originally Posted by Seronx View Post

Carrizo which might be on 28-nm ET-SOI is ramping up at GlobalFoundries Fab 1. The price drops for Kaveri, are to equalize performance per dollar with Carrizo.

Carrizo costs less to fabricate, than Kaveri, but has more performance which brings higher value. It is also more energy efficient at a given clock and voltage.

Carrizo-L @ 15W = Kaveri2.0 @ 35W
Carrizo @ 45W = Kaveri @ 95W

Carrizo-L = 1 MB L2 per CPU cluster and 128 KB L2 per GPU cluster
Carrizo = 2 MB L2 per CPU cluster and 256 KB L2 per GPU cluster

the carrizo comes out in dec?

do you know if it will have gpu upgrade

also fm2 or fm3?
Edited by xzamples - 10/23/14 at 6:09am
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post #55 of 74
Carrizo in December is for mobile. Desktop comes around Feb~March.
post #56 of 74
Quote:
Originally Posted by NaroonGTX View Post

Carrizo in December is for mobile. Desktop comes around Feb~March.

Hopefully they get more OEM support this time. I have seen like a total of 5 different kaveri laptops... And finding one with the flagship (fx-7600p) is near impossible.
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post #57 of 74
Quote:
Originally Posted by MapRef41N93W View Post

Cheap FM2 boards are pretty bad. A Pentium G3258 will easily OC to 4.5+GHz on an $50-$60 ASRock H81 board and you don't need to worry about frying them as the CPU isn't drawing more than 100 watts.

Edit: I keep typing "G3528" for some reason.

This is true, as I have been slowly building a general purpose rig for GMA and GPA I have been following pricing versus performance on both of these options. I have now picked up a G3258 FOR $55 (Tigerdirect), and an MSI H81 Sata3 USB 3 board for $24 (Frys.com) (including shipping and taxes in both cases) I have Yet to find similar deals on comparable FM2+ setups.

Of course an a4 or a celeron would be plenty for the requirements of this rig, but I'd like it to last for them, and my boy likes to play browser games and minecraft, and whatnot. If you can get that A6 with a decent board for anywhere near that price then by all means run it!

Yay for price drops and competition! I would be surprised if Intel's release of their Anniversary G3258 with overclocking abilities isn't putting any pressure on AMD to price drop these chips.
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post #58 of 74
Quote:
Originally Posted by xzamples View Post

the carrizo comes out in dec?

do you know if it will have gpu upgrade

also fm2 or fm3?
Yes it will have a gpu upgrade in terms of performance but they might just alleviate the memory bandwidth restrictions it has right now. They are probably going to use the texture compression used in Tonga to do just that. But they may add things later on let's just hope the silicon is good because Kaveri never got to it's true potential. Early samples gave high expectations of 1050Gflops available eventually it came down to a mere 800.
post #59 of 74
Quote:
Originally Posted by xzamples View Post

the carrizo comes out in dec?
Mobile Carrizo is expected in Decemeber, and Desktop Carrizo is expected in March. Mobile Carrizo(15W-35W) will be replacing Beema(15W) & Kaveri ULV(19W) & Kaveri SV(35W). Desktop Carrizo(45W-65W) will be replacing Kaveri(65W-95W).
Quote:
Originally Posted by xzamples View Post

do you know if it will have gpu upgrade
Carrizo will be using Graphics IPv8.5. Which means higher efficiency and higher performance over Kaveri's iGPU.
Quote:
Originally Posted by xzamples View Post

also fm2 or fm3?
Carrizo and Carrizo-L will be FM2+ and FP4. The new fusion sockets will not be till the Basilisk APU.
Quote:
Originally Posted by maarten12100 View Post

But they may add things later on let's just hope the silicon is good because Kaveri never got to it's true potential. Early samples gave high expectations of 1050Gflops available eventually it came down to a mere 800.
The main reason for that is because of the GPU. The thing that failed in Kaveri wasn't Steamroller, but the Sea Islands iGPU.

A10-7850K was suppose to be;
3.7 GHz * 4 Cores * 8 (FMA) Flops => 118.4 GFlops (There is a turbo that goes up to 4 GHz, that is for a single module)
512 ALUs * 2 FMA * 0.91 GHz => 931.84 GFlops
1,050.24 GFlops. The issue is going from PD-SOI to bulk ruined there estimations. They over estimated bulk and suffered for it.

Carrizo will over achieve and go beyond 1050 GFlops. My estimates for Carrizo put it at an approximate of 1250 to 1350 GFlops. This is only possible if Carrizo went back from 20-nm LPM to 28-nm ET-SOI.

Berlin/Bald Eagle = 28-nm SHP
Pre-December 2012 WSA: Torronto/Merlin Falcon = 20-nm LPM
Post-December 2012 WSA: Torronto/Merlin Falcon = 28-nm ET-SOI

This roadmap describes the pre-2012 WSA that happened in December;


Enterprise;
Late 2014 = 28-nm SHP
Late 2015 = 20-nm LPM/SHP

Client;
Early 2014 = 28-nm SHP
Early 2015 = 20-nm LPM/SHP

After the December 2012 WSA it became the below.

Enterprise;
Late 2014 = 28-nm SHP
Late 2015 = 28-nm ET-SOI

Client;
Early 2014 = 28-nm SHP
Early 2015 = 28-nm ET-SOI

The 2014 WSA amendment has solidified this change in technology nodes.


28-nm ET-SOI gives the performance and power of 20-nm, which is achieved at reduced process complexity.

SOITEC has hinted at why there was a delay from 2012 to 2014, for ET-SOI.

Quote:
A second generation of 28nm FD-SOI, which implements source/drain engineering, delivers a 25% performance gain over the high-end 28nm high-K/metal gate (HKMG) bulk with slightly lower process wafer cost, or achieve the same performance as 20nm bulk but at the cost of 28nm HKMG. This new generation uses in-situ boron doped SiGe epi for PMOS and phosphorus or arsenide doped Si or Si(C) Epi for NMOS, as well as forward back bias. Note that this is source/drain engineering – the channel remains undoped, so the advantage of FD-SOI in terms of avoiding RDF is maintained.

The reason why 28-nm ET-SOI Gen 2 and 14-nm ET-SOI are launching together. Can be explained with the above and the below quotes.
Quote:
New process elements compared to the 28nm FD-SOI technology developed in this project include a strained-SiGe channel and dual source-drain SiC: P and SiGe:B in-situ doped epi-taxies for performance boost.

In addition, this technology features 84nm contacted poly-pitch, new contact interconnect constructs, and 64nm metal 1 pitch, providing 0.55x area scaling over the 28nm technology.

28-nm ET-SOI = non-strained Channel + non-strained Source/Drain
2nd 28-nm ET-SOI = non-strained Channel + SiGe/SiC strained Source/Drain
14-nm ET-SOI = SiGe strained Channel + SiGe/SiC strained Source/Drain

28-nm ET-SOI detailed and specified in 2011/2012 // 28-nm Gen2 ET-SOI and 14-nm ET-SOI detailed and specified in 2013/2014.
Edited by Seronx - 10/23/14 at 2:58pm
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post #60 of 74
Quote:
Originally Posted by maarten12100 View Post

Yes it will have a gpu upgrade in terms of performance but they might just alleviate the memory bandwidth restrictions it has right now. They are probably going to use the texture compression used in Tonga to do just that. But they may add things later on let's just hope the silicon is good because Kaveri never got to it's true potential. Early samples gave high expectations of 1050Gflops available eventually it came down to a mere 800.

The reason Kaveri didn't meet the earlier-announced 1.05 TFlops mark is because of the GPU, not the CPU. The GPU was higher clocked in the earlier testing, but they lowered the clocks later on and wound up with the ~856 that the final flagship silicon had.
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