Friday, January 20th 2012
AMD Vishera Packs Quad-Channel DDR3 IMC, G34 En Route Desktop?
AMD might be a little sore that its "Zambezi" FX processor family based on its much-hyped "Bulldozer" architecture didn't quite meet the performance expectations of a ground-up new CPU architecture, but it doesn't want to take chances and build hype around the architecture that succeeds it. From various sources, some faintly-reliable, we have been hearing that the next-generation of high-performance desktop processors based on "Piledriver" architecture, codenamed "Vishera", will pack five modules or 10 cores, and will be structured essentially like Zambezi, since Piledriver is basically a refinement of Bulldozer architecture. The latest leak comes from the Software Optimization Guide for AMD 15h family (read here), which was picked up by CPU World while most of us were busy with CES.
CPU World compiled most of the features of what it suspected to be AMD referring to its future processors based on the Piledriver architecture, that's "Vishera" (desktop high-performance), "Terramar" (high-density server), and "Sepang" (small-medium business server) parts. The three are not the first chips to be based on Piledriver, AMD has a new mainstream desktop and notebook APU in the works codenamed "Trinity", which is en route for a little later this year. Trinity basically has an identical CPUID instruction-set as Vishera, Terramar, and Sepang, confirming their common lineage compared to today's "Bulldozer" architecture. The most catchy detail is of Vishera featuring 4 DDR3 channels.The plot thickens where "HyperTransport Assist feature" is listed as being supported on Vishera. HT Assist is a feature found on AMD's enterprise socket G34 processors, which facilitates better inter-die communication between the two dies of a typical socket G34 Opteron processor. The G34 (LGA1972) package is a multi-chip module of two quad-core, six-core, or four-module dies, which combined have four DDR3 memory channels, and a number of HyperTransport links to communicate with neighbouring sockets and the system's chipset. Could this be the first indication that AMD wants to take on Intel LGA2011 HEDT (high-end desktop) using Vishera chips in the G34 package? It will be a while before we find out.
Apart from using common silicon between client and enterprise platforms, AMD does have a history of colliding the two.
Source:
CPU World
CPU World compiled most of the features of what it suspected to be AMD referring to its future processors based on the Piledriver architecture, that's "Vishera" (desktop high-performance), "Terramar" (high-density server), and "Sepang" (small-medium business server) parts. The three are not the first chips to be based on Piledriver, AMD has a new mainstream desktop and notebook APU in the works codenamed "Trinity", which is en route for a little later this year. Trinity basically has an identical CPUID instruction-set as Vishera, Terramar, and Sepang, confirming their common lineage compared to today's "Bulldozer" architecture. The most catchy detail is of Vishera featuring 4 DDR3 channels.The plot thickens where "HyperTransport Assist feature" is listed as being supported on Vishera. HT Assist is a feature found on AMD's enterprise socket G34 processors, which facilitates better inter-die communication between the two dies of a typical socket G34 Opteron processor. The G34 (LGA1972) package is a multi-chip module of two quad-core, six-core, or four-module dies, which combined have four DDR3 memory channels, and a number of HyperTransport links to communicate with neighbouring sockets and the system's chipset. Could this be the first indication that AMD wants to take on Intel LGA2011 HEDT (high-end desktop) using Vishera chips in the G34 package? It will be a while before we find out.
Apart from using common silicon between client and enterprise platforms, AMD does have a history of colliding the two.
229 Comments on AMD Vishera Packs Quad-Channel DDR3 IMC, G34 En Route Desktop?
"Got a source?"
An inference, if you will, from the as yet unconfirmed performance boost that Trinity has over Llano, and then applying some special-opinion sauce to that to speculate on the performance of the Vishera core optimizations.
There, that sounds better.
So Clock 4 Clock performance is crazy to consider when purchasing a PC. Cores, Cache and Ghz for the $ it costs. If you over clock then watts and voltage, unlocked or locked. Memory controller speed and channels all count too. Core architecture performance is almost always quickly optimized by software. Instruction sets get utilized and better drivers get published. Last but not least PLATFORM! I think the main let down with bulldozer is that AMD fans were expecting Zambezi to thoroughly out perform the 2600k. AMD showed a couple of tests with the 7970's that gave better frame rates then sandybridge and handbrake is better on FX. But the 2600k out performs FX quite a bit in soo many areas. SOOOOO WHAT. It costs more!!! And The AM3+ Platform has way more potential then 1155. And 1155 costs more. Upgradability, price for performance and mufti-threaded architecture way beyond sandybridge. That's why they code named it "BULLDOZER". FX can park 7 cores. Power consumption??? Is out performing sandybridge with another $1000 chip really the only thing that matters? For less then 1/10 of 1% of pc's it does. That's right less then 1/10 of 1% of pc's run more then the 8150 can currently process. We don't need another $1000 chip. We need $200 chips on a platform that can give us 10 good years of pc power. Spend $2000, or so, on a PC every 3-4 years with intel to stay on top or spend $2000 once and a couple hundred every 3-4 years to stay on top with AMD. 1155 Sandybridge chips will be far behind am3+ chips in two years. Guess Intel boys will have to use it as a coaster and take out another mortgage to upgrade. American consumerism is way better off with AMD. And so is my rig :) PS my FX-6100 rig gets 8900 on passmark at 5GHZ with a $20 CAFA70 cooler. I paid $250 for FX-6100 and TA990fxe. I wonder what a 10 core pile driver chip will get in my rig in a few years. 15000 seems reasonable.
Either troll or hapless fanboi...
Anyhow, I hope AMD does pull this one out... FX are not bad chips, just fall pathetically short of the hype. For many applications you will not notice if your running on them or not.
But the fact is currently a 2500k will beat an fx rig in cost and in performance.
IB doesn't look so promising so AMD may be able to narrow the gap here.
I am seriously wondering why people pull this 10core number out of their ass...
On desktop Piledriver is 8 not 10... on server it stays the same as IL 4,8,12,16 core variants... though who knows they may trim it down a bit.
That said I have an i5 laptop and a 2p MC for my daily drivers and a 4p MC for folding (find me a machine faster than harbringer for folding).
AMD has work to do, but they will survive. SB-E is not that great power/perf and IB is looking to be a poor oc...
1. The spec's listed are Pre-Vishera, the 10 core was a "komodo" FM2 socket designation, before AMD's new CEO got his position, and canceled Komodo in favor of an 8 core AM3+ socket compatible design. And hence dual-channel RAM.
www.anandtech.com/show/5491/amds-2012-2013-client-cpugpuapu-roadmap-revealed
2. Phenom II IPC is only 20% behind sandy Bridge. As Trinity appears to have the same IPC as Phenom II, despite lacking L3 cache, it can be probable to assume that Piledriver will perform to near sandy bridge IPC, while clocking much higher.
3. This says nothing of the Resonant clock mesh AMD has already stated will be present on Piledriver, increasing power efficiency/clock.
4. Outdated information is outdated.
And yes that RCM makes it clock higher/watt. It may mean it becomes a high end OC chip, if it can clock into the upper 5ghz range on water, and will give AMD an overall fully competitive mainstream chip. Also, if I remember correctly part of the turn to BD architecture was because PII couldn't be improved much more, and they wanted better power efficiency.
1st gen failed at that, though I'm hoping Piledriver gives them a competitive edge, and means we can recommend AMD again, and the fanboy war debates with no good answer one way or the other can commence.
I have no doubt they will reach 5GHz on Water, probably be able to do that on Air if the stock clocks are so high. I just don't see Piledriver shaping up to be better than or even on par for Sandy Bridge, let alone Ivy Bridge (which is something like 8% faster in most applications while overclocking a little less and generating slightly more heat). The big issue is AMD really needs to figure out how to get their "Tock's" on the shelves correctly. It seems like the first version of the last couple CPU's AMD has made (Phenom I, Bulldozer) have been riddled with problems, but they usually have a decent second round. If they want to be competative their first go has to work as well as Intel (Sandy Bridge etc.).
IPC rules over clock speed
Both Phenom 2 and Core i architectures are superior than the bulldozer arch, Overclocking is only a plaything. I did say IPC on the Phenom II and Core i are higher than bulldozer hence the abysmal performance numbers tested even here.
Re-read the post.
Intel CPUs:
Clock Speed Based (include 1st Gen Netburst) (Low IPC)
8086
8088
286-486DX
Pentium 1
Pentium 4 (P4 Based Xeon, Celeron)
Pentium D
P6 Based (Include Core) (High IPC)
Pentium Pro
Pentium 2 (Celeron)
Pentium 3 (P3 Based Xeon, Celeron)
Core
Core 2
Core i (P6 with 2nd Gen Netburst)
unknown Intel Part
Ivy Bridge-E
AMD CPUs:
Clock Speed Based
8080
D8086
Am286-Am486 (Slighty higher IPC than Intel parts)
K10 Phenom 1 (Including Phenom 1 Based Opterons, Athlon, Sempron)
Bulldozer (Including Bulldozer based Opterons)
High IPC Parts
Am586
K6-K6III
K7 (Geode, Duron, Sempron, Athlon, Athlon XP)
K8 (Athlon 64, Athlon 64 FX, Athlon 64 X2, Opteron, Sempron)
K10.5 (Phenom II, Opteron, Athlon II, Sempron)
Unknown AMD Parts
Piledriver
Opteron 3200