http://www.legitreviews.com/amd-unveils-its-arm-server-processor-amd-opteron-a1100-series_134794
And boom goes the dynamite
And boom goes the dynamite
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Anandtech has a longer article. The performance looks a bit less impressive now, at least with the 8c 25W Opteron A1100 vs last year's 8c 20W Atom C2750 with the benchmark (estimate) AMD released so far. The Atom is 25% faster and uses 20% less power. Ouch. B-b-b-b-but ARM is supposed to be lower power!
Anandtech has a longer article. The performance looks a bit less impressive now, at least with the 8c 25W Opteron A1100 vs last year's 8c 20W Atom C2750 with the benchmark (estimate) AMD released so far. The Atom is 25% faster and uses 20% less power. Ouch. B-b-b-b-but ARM is supposed to be lower power!
Where are you seeing that?
Better question, where am I not seeing that? Surprise me!Where are you seeing that?
Avoton (the Atom C2750 I linked above) has 10GbE, if the switch supports that standard. If a second 10GbE port is needed, it might use 10W if it's installed via a PCIe card, but another controller chip installed on a motherboard isn't going to use 10W. If 1GbE (or 2.5GbE) is used, Avoton supports 4 of those.Also this chips has 2 * 10Gbps ethernet controller built in. You are not factoring the wattage for the separate ethernet controller needed for the x86 chip in. Your looking at another 10W for the ethernet controller (going by Intel's own specs).
Yeah max 12W and the same Apache performance of an Intel Xeon.
1Gbps ethernet is so easy to max out we don't need high powered web servers.
Hopefully this will bring down the cost of web hosting.
If this is a new server chip I wonder if this means there's a chance of a FX based derivative eventually showing up.
Better question, where am I not seeing that? Surprise me!
When AMD released the quad core Jaguar-based server CPU, it was more than happy to compare the performance to the Centerton Atom, which has its heritage in the crappy 5 year old Silverthorne in-order execution core. I was surprised that AMD didn't compare what appears to be somewhat decent SPECint_rate performance* to what Intel has been shipping since last year. So I just checked Avoton Atom's performance for comparison. http://www.intel.com/content/www/us/en/benchmarks/atom/atom-microserver-specint-rate-base-2006.html
Easy to compare. It doesn't really get better. 106 is actually 32% higher than 80 and 25W is 25% higher than 20W. Forgive my lazy math above. I should have put the bigger numbers first in the comparison.
For the curious of how an 80 score in SPECint_rate stacks up, a dual core i3-2100 scores a bit higher (this was the very first score listed in a search for 'intel core i3'): http://spec.org/cpu2006/results/res2012q2/cpu2006-20120426-21390.html Viva la ARM revolution!
* no one reports ARM spec scores, at least not for SPECint 2006. Nvidia and others usually release SPEC CPU 2000 scores, which are considered obsolete.
so you are comparing a not released arm v8 64bit chip to a intel product that has been released and the previous amd release mmmk its a different microarchitecture your point is invalid
wut?so you are comparing a not released arm v8 64bit chip to a intel product that has been released and the previous amd release mmmk its a different microarchitecture your point is invalid
The A57 design spec is for 2.5GHz-ish clock speed on a 20nm process according to ARM, although it may hit close to that clock speed on TSMC's 28nm LP process. AMD is using a stock licensed A57 core, but performance may be a bit better in certain tasks than other licensed A57-based SoCs if AMD's memory controllers are superior.I wonder how well this would perform scaled to 95W
Just a hunch but: AMD is at a point with ARM where they are late to the game and catching up rather well. Their long term moves are probably aimed at consumer applications, and where the A57 might be unfit right now, vs jaguar or SR or even an i3 dual, with ARM outpacing x86 sales, it's where code-monkeys will migrate to, and in 10 years time AMD could be fabbing high end ARM APU alongside a dying breed of x86 chips.
The A57 design spec is for 2.5GHz-ish clock speed on a 20nm process according to ARM, although it may hit close to that clock speed on TSMC's 28nm LP process. AMD is using a stock licensed A57 core, but performance may be a bit better in certain tasks than other licensed A57-based SoCs if AMD's memory controllers are superior.
If AMD had an architecture license (like Apple, Qualcomm, Samsung and others), and an ARM design team, it could stretch the clock speed and improve IPC, but AMD doesn't have those things. Even it hired a quality team today, the fruits of that labor would take years to emerge (see Nvidia and Project Denver).
AMD is on pace to release Cortex-A57 based server chips with other manufacturers which also licensed a standard core. There are couple of ARM architecture licensees which have announced server chips too (Qualcomm's 3GHz 16nm model and Samsung stating it will enter the server market), which will have significant benefits over a plain licensed core in CPU performance. Then there's the literally dozens of companies which assemble ARM SoCs from licensed blocks, any of which could easily enter the same market and match features and performance point for point.Just a hunch but: AMD is at a point with ARM where they are late to the game and catching up rather well.
I'd have a hard time convincing anyone to ok production use with 10GbE.
Microsoft should consider making full Windows for ARM if they want to stay is server OS business. Wouldn't mind full OS for end users. It would open up possibilities.
Microsoft should consider making full Windows for ARM if they want to stay is server OS business. Wouldn't mind full OS for end users. It would open up possibilities.