Will Bobcat be the home run AMD is looking for?

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Dark_Archonis

Member
Sep 19, 2010
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Why is this clear? I don't think it's clear at all that in the segment they compete, a CULV SB will wipe the floor with Zacate on CPU performance.

A desktop SB will wipe the floor with Zacate on CPU performance, sure, that much is definitely clear. It should. SB was designed for that space. How much will Intel have to cut from their features to meet the TDP requirement on the CULV cores though? Nobody knows at this point, and reviews comparing it to the CULV i5 are favoring Zacate on all fronts. SB will improve upon Arrandale, but how much?

Do we really know that (CULV) SB CPU will wipe the floor with Zacate CPU? I think likely to be more competitive than you're making it out to be.

Complete Zacate benchmarks will be available soon, and then we'll know a lot more. I just hope that next year it's a lot easier to purchase an 18W TDP non-notebook than it is today ($400 ITX boards + $200 CPUs, lol)

Anand's initial Brazos (Zacate) benchmarks are in, and yes, it is VERY clear now. Even a low-end Celeron E absolutely smokes Zacate in terms of CPU performance. A mobile CULV Sandy Bridge will easily smoke a Bobcat in terms of CPU performance.

Where are you getting these imaginary numbers from? Reviews comparing Zacate to i5 are "favoring" Zacate? Really? Can you post concrete proof of this?

Anand has posted his Zacate benchmarks, and in virtually every situation Zacate is blown away by Core 2 Duo-based Celeron E and Pentium products, not even mentioning i5 products.

So yes, at this point I think we *definitely* know that mobile CULV SBs will blow away Zacate in CPU performance, because Core 2 Duo-based Intel mobile CULV products already blow away Zacate in CPU performance.
 

cbn

Lifer
Mar 27, 2009
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http://www.anandtech.com/show/4023/the-brazos-performance-preview-amd-e350-benchmarked/3

Anandtech Cinebench R10 Single threaded scores:

Zacate: 1171
Atom D510 (1.66 Ghz dual core with SMT): 709

Anandtech Cinebench R10 Mutithreaded scores:

Zacate: 2250
Atom D510: 2024

Basically 1.6 Ghz Bobcat core is much faster than 1.66 Ghz atom core in the single thread test, but in the multi-threaded benchmark Intel's SMT closes the gap.

Amazing single threaded performance (IMHO) considering the size of the Bobcat cores.
 
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George Powell

Golden Member
Dec 3, 1999
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I voted NO, not because it's a bad product - far from it in fact but because it obviously forms just one part of the product strategy.
The Bobcat is entering a part of the market which could potentially get quite crowded before too long.
At the moment it is occupied by various versions of Atom (+/- nVidia graphics) then the Pentium higher up the performance scale and VIAs Nano is certainly going to form part of the market especially if it is competitively priced.
What really is the question to ask though is what market will it fit into?
High end tablet? - possibly
Netbooks? Certainly
Laptops? - at the low end definitely.
Desktops? - possibly
HTPC - I'm not so sure (which is a pity) AMDs Vision product grouping shows us that this product is not aimed towards BluRay playback - in my view a minimum requirement for an HTPC.
 

frostedflakes

Diamond Member
Mar 1, 2005
7,925
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Looks pretty decent. Nothing revolutionary, but nice to have an alternative to Atom. Can't wait to see netbooks based on these APUs, hopefully battery life is competitive with Atom-based models.
 

Dark_Archonis

Member
Sep 19, 2010
88
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http://www.anandtech.com/show/4023/the-brazos-performance-preview-amd-e350-benchmarked/3

Anandtech Cinnebench R10 Single threaded scores:

Zacate: 1171
Atom D510 (1.66 Ghz dual core with SMT): 709

Anandtech Cinnebench R10 Mutithreaded scores:

Zacate: 2250
Atom D510: 2024

Basically 1.6 Ghz Bobcat core is much faster than 1.66 Ghz atom core in the single thread test, but in the multi-threaded benchmark Intel's SMT closes the gap.

Amazing single threaded performance (IMHO) considering the size of the Bobcat cores.

Given the hype for Bobcat, and also considering Bobcat is out-of-order while Atom is in-order, personally I don't find the performance all that amazing.

Compared to a 1.8Ghz Atom D525, the gap would have been even smaller.

In the single-thread Cinebench test, Zacate E-350 beats an Atom D510 by 65%. However that is a very specific benchmark, and not all results will mirror that.

In the multi-threaded Cinebench test, Zacate is only 11% faster than an Atom D510.

Yes per-clock Bobcat easily performs better than Atom, and this was expected. However when looking at multi-threaded performance, and looking at overall performance, the gap is not quite so big. Atom's HT helps quite a bit, and although it was not tested here, the top Atom (D525) runs at a higher clock than the top Bobcat. We should see dual-core Atoms hitting over 2Ghz next year as well.
 

cbn

Lifer
Mar 27, 2009
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Given the hype for Bobcat, and also considering Bobcat is out-of-order while Atom is in-order, personally I don't find the performance all that amazing.

Compared to a 1.8Ghz Atom D525, the gap would have been even smaller.

In the single-thread Cinebench test, Zacate E-350 beats an Atom D510 by 65%. However that is a very specific benchmark, and not all results will mirror that.

In the multi-threaded Cinebench test, Zacate is only 11% faster than an Atom D510.

Yes per-clock Bobcat easily performs better than Atom, and this was expected. However when looking at multi-threaded performance, and looking at overall performance, the gap is not quite so big. Atom's HT helps quite a bit, and although it was not tested here, the top Atom (D525) runs at a higher clock than the top Bobcat. We should see dual-core Atoms hitting over 2Ghz next year as well.

http://www.pcper.com/article.php?aid=1039&type=expert&pid=8

How do you feel about these power consumption figures?
 

Dark_Archonis

Member
Sep 19, 2010
88
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The idle power consumption is great. At load though, Zacate's consumption is nothing special.

Keep in mind future Atoms will continue to go down in both idle and load consumption.

Correct me if I'm wrong, but I believe the Atom D525 offers the same power consumption as the 510 while offering more performance.
 

AnandThenMan

Diamond Member
Nov 11, 2004
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http://www.pcper.com/article.php?aid=1039&type=expert&pid=8

How do you feel about these power consumption figures?
Further to that, the conclusion there is vastly different vs. the Anandtech review.
Let's tackle the issue of performance from a component stand point. The dual-core Bobcat processor in the Zacate APU from AMD is much faster than the dual-core HyperThreaded Atom D510 processors and is about on par with the performance of the Penryn-based dual-core Celeron SU2300 CULV part. Obviously the in-order architecture of the Atom CPU family is starting to show its age and I have to wonder if Intel doesn't have something else up their sleeve to compete with the obviously fundamentally better design of the Bobcat core.

The 80 stream processors / 2 SIMDs found in the AMD E-350 blow away any graphics performance you might get with the integrated solution on the D510 and the best the Atom designs have to offer today. The Radeon HD 6310 is also faster than the graphics solution found in the NVIDIA ION chipset, sometimes by a notable margin, making the CULV+ION combination that much less impressive in the light of the power efficiency that the AMD Brazos platform provides.

The performance of the E-350 is impressive but even more so is how much better the power efficiency looks with the Brazos platform compared to these Intel offerings. Intel's CULV+ION platform not only uses more than twice as much power at idle than AMD's offering but also requires 30% or so more power at peak performance while still falling behind in many benchmarks. The Intel Atom D510 platform with its integrated graphics does have a good showing in terms of power consumption but at the levels of performance it provides, that is all it can gather credit for.

I find the Anandtech article bizarre at best.
 

cbn

Lifer
Mar 27, 2009
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The idle power consumption is great. At load though, Zacate's consumption is nothing special.

AMD E-350 1.6 GHz APU Brazos Platform Preview - Zacate APU Benchmarked said:
Under a complete load of the CPU cores only, the D510 Atom and the E-350 AMD APU used very similar amounts of power. However, the performance of the AMD part was definitely higher, making it an easy win for performance/watt competitions. And even though the CULV Celeron CPU is a bit faster than the AMD E-350, its power consumption numbers are about 50% higher which is a huge difference in the world of mobile computing.

However, PC Paper did caveat the systems being compared were not Apples to Apples.
 
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IntelUser2000

Elite Member
Oct 14, 2003
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How much of a difference does that make?

SpecCPU scores show the differences between the best non-gcc AMD optimized libraries and worst ones are in the order of 10%. If we compare between best AMD optimized compilers vs best Intel compilers it goes into single digit percentages.

Atom is extra weak on media because the FP unit has some restrictions in addition to being 2-wide in order. The 65% gap would reduce to somewhere around 40-45% after that is taken in account.

The Via dual core Nano looks like it'll be on par with the original Banias Pentium M. Bobcat lags the Nano by around 10%.
 

nyker96

Diamond Member
Apr 19, 2005
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*** Can we make a separate Brazos review thread w/ review links? This thread is already 5 pages long.
 

Nemesis 1

Lifer
Dec 30, 2006
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Ya I would wait until we see Oaktrail results on those tiny screens, Oaktrail is on 32nm. Not 45nm as some here believe. I really waiting to see the final results of oaktrail now that it has a target. Its alot like magna cores. So many thought foolishly that AMD would gain server share in qt 3 . But instead lost share even further. AMD does have a small window here . Very small were power consumtion and performance meet. Those who want longer usage will buy Oaktrail . Those who want graphics over battery life will go AMD . Those who want all around performance and don't care about price or battery life will go SB . Thats a really small window . As for tablets AMD has nothing for this market. As for comparsion sites use they are using AMDs new against Intels old . Oaktrailis out in 1st qt 2011. Comparring SB to AMD is a lol . Nothing there unless Ya want to look at zapata against intells old IGP . Which so many seem to want to do . AT also did a test of SB IGP compare to that.
 
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Martimus

Diamond Member
Apr 24, 2007
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Wow. The Brazos platform performs much better than I thought it would for the size and power consumption. I wouldn't think that Atom was such a dog, but I guess it is. Intel must have made some pretty poor design decisions if Brazos was able to have ~ the same power consumption but far greater performance in nearly all areas. I really am surprised, to say the least. I am really wondering if Intels decision to go in order really saved them much power after seeing the benchmarks.
 

IntelUser2000

Elite Member
Oct 14, 2003
8,686
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Wow. The Brazos platform performs much better than I thought it would for the size and power consumption.

What Atom should allow is go into smartphones and tablets. The power consumption comparison will be far better off for Atom when they compare against the N series chips.
 

veri745

Golden Member
Oct 11, 2007
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I find it odd that Anand's article casts the Zacate APU in such a different light than the rest of the available previews from other sites.

Is it just the choice in benchmarks, or the choice in compared systems? I am quite impressed at the Zacate system's performace compared to the CULV+ION system in PCper's article, but I was not nearly as impressed after reading Anand's article vs the old K8 X2 and pentium DC

I stand by my vote of "yes" given the number of design wins and revenue that I think this product will generate for AMD, but it may not be as popular as some of the early hype has suggested.

The most important aspect for me, by far, are the battery life tests that remain to be seen on real platforms.
 

Idontcare

Elite Member
Oct 10, 1999
21,118
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Wow. The Brazos platform performs much better than I thought it would for the size and power consumption. I wouldn't think that Atom was such a dog, but I guess it is. Intel must have made some pretty poor design decisions if Brazos was able to have ~ the same power consumption but far greater performance in nearly all areas. I really am surprised, to say the least. I am really wondering if Intels decision to go in order really saved them much power after seeing the benchmarks.

I think if you really want to use the benchmark performance disparity between Bobcat and Atom to speak towards the decision making that went into the creation of Atom you really need to take it to a deeper level of consideration.

Intel didn't/doesn't necessary want bobcat performance at bobcat ASP's and bobcat gross-margins...and until bobcat is actually released Intel does get to continue to make Atom gross-margins based on Atom performance.

Also Intel didn't/doesn't necessarily want bobcat performance at bobcat ASP's to cannibalize their existing low-end and higher-margin cpu products.

AMD doesn't really have a choice, Intel gets to have its cake and eat it to (profits...) whereas AMD continues to make decisions with the aspiration of simply getting out of the business of being a non-profit charity.

The reason why Intel made Atom at the executive level is different than the reason AMD pursued the creation of Bobcat. One is measured-risk at creating new markets and new market opportunity, the other is a counter-measure (reactionary) to the former.

I said the same of Intel's move to adopt 64bit x86 after AMD moved to it in order to create/operate the 64bit x86 server marketspace. They both do it, the rationalizations for them doing it have to be put into context though.

Comparing performance of Atom and Bobcat does not speak to the context of the decision making behind the creation of Atom IMO.
 

exar333

Diamond Member
Feb 7, 2004
8,518
8
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Really dissapointed in the Bobcat performance. The CPU was pretty dismal...it barely beat the in-order Atom in most of the benches (both were clocked around 1.6ghz). The GPU performance was pretty good, but when the platform is already so low-end, who cares about getting 22fps instead of 15fps on really crappy resolution and detail? The games you actually want to play with a low-end GPU (like SC2 or Civ5) ran abyssmally on the Bobcat.
 
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