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CPU ID screen shot of "Yorkfield" at 2.33 GHz  (Source: DailyTech)

Intel "Yorkfield" ScienceMark 2 L2 cache performance  (Source: DailyTech)
DailyTech managed to snag a quad-core "Yorkfield" for a few quick benchmarks

Benchmarks of Intel’s Penryn based dual-core Wolfdale have appeared a couple times in the past month. The early benchmarks tested engineering sample processors and showed Wolfdale, on average, performing 5 percent faster, clock for clock then Conroe. However, benchmarks of the quad-core Yorkfield are virtually non-existent to the public.

Intel’s Yorkfield is not a native quad-core design. As with Kentsfield, Yorkfield features two dual-core dies fused together. The design results in each pair of cores having access to its own pool of shared L2 cache. Since Penryn has more cache, each pair of cores has access to 6MB of L2 for a total of 12MB – up from the 4MB per pair and 8MB total of Kentsfield.

In addition to the increased cache size, Penryn features a faster 24-way associative L2 cache, which cuts off a few clock cycles. Kentsfield has an 16-way associative L2 cache.

also features new SSE4 instructions catered towards multimedia tasks. SSE4 introduces 47 new instructions to improve performance of video accelerators, graphics building blocks and streaming load. Intel claims a 2x performance gain in video acceleration tasks. There are 14 new instructions for video accelerator performance enhancement. Intel improves compiler auto-vectorization performance with 32 new instructions.

Intel expects SSE4 optimizations to deliver performance improvements in video authoring, imaging, graphics, video search, off-chip accelerators, gaming and physics applications. Early benchmarks with an SSE4 optimized version of DivX 6.6 Alpha yielded a 116 percent performance improvement due to SSE4 optimizations.

Also new to Penryn is the Super Shuffle Engine. Intel’s Super Shuffle Engine allows for shuffling unpacking, packing, align concatenated sources, wide shifts, insertion and extraction, and setup for horizontal arithmetic functions. Intel claims a “2x faster SSE shuffle instruction execution,” according to earlier briefing documents.

Although Yorkfield uses a 45nm fab process and consumes less power, Intel plans to stick to its existing 95 Watt and 130 Watt thermal design power ratings.

DailyTech previously presented quick and dirty benchmarks of AMD’s 1.6 GHz Barcelona processor last June. Today, DailyTech has a few quick and dirty benchmarks of Intel’s quad-core Yorkfield Core 2 processor, in an LGA775 package.

The testing configuration is as follows:
  • Intel Core 2 Extreme QX6700 @ 2.33 GHz, 1333 MHz front-side bus
  • Intel Yorkfield 2.33 GHz, 1333 MHz front-side bus
  • Intel P35 Express based motherboard
  • 2x1GB DDR3-1333 memory
  • AMD ATI Radeon HD 2600 XT
Since Intel does not have a 2.33 GHz Kentsfield processor, a Core 2 Extreme QX6700 is used. The Core 2 Extreme QX6700 has an unlocked multiplier, which allowed us to clock it at 2.33 GHz with a 1333 MHz front-side bus.

 SiSoft Sandra XII CPU-Arithmetic

2.33 GHz
2.33 GHz

 SiSoft Sandra XII CPU Multimedia

2.33 GHz
2.33 GHz

 SiSoft Sandra XII Memory Bandwidth

2.33 GHz
2.33 GHz

Synthetic benchmarks do not really reveal too much of a performance difference between Kentsfield and Yorkfield. However, SiSoft Sandra XII does not contain SSE4 optimizations yet.

Unlike AMD, Intel relies on an off-chip memory controller. Although AMD achieves low latencies with its integrated memory controller, Intel manages the same feat with a northbridge-installed controller. Intel managed to offset the latencies associated with off-die memory controllers with increased L2 cache. Yorkfield’s additional L2 cache and speedier 24-way associative L2 cache yields an approximate memory bandwidth boost of 7 percent.

 Cinebench 10 Performance

2.33 GHz
2.33 GHz

 DivX 6.6

2.33 GHz
2.33 GHz

Cinebench 10 yields an approximate 8 percent boost in single and multithreaded rendering. Encoding a video file into DivX also yields a similar 8 percent performance boost.

Overall, with our limited time with Yorkfield, performance of the quad-core processor is roughly 8 percent faster clock for clock than Kentsfield. However, this is expected as Yorkfield is essentially a 45nm die shrink of Kentsfield with a few tweaks here and there.

Expect Intel to begin shipping Yorkfield in mass quantities in Q1 2008. Quad-core Xeon X5400 Harpertown processors, which are somewhat similar to Yorkfield, will ship in November.

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dies not dice
By johnsonx on 8/24/2007 12:46:02 AM , Rating: 3
I know you and Anandtech have had this debate before, and you decided to use dice as the plural of die. You're still wrong, nevermind what you decided. 'Dice' are the 6-sided things you toss at the craps table, or the 12 sided things dorks use to play D&D (ok, fine, I'm a dork too, just not that particular kind of dork). They're called 'dice' because it's more than one thing addressed as a singular unit, sort of like 'pants' is plural because it has two legs, even though you're talking about 1 single garment of clothing. In fact, there are cases where you can refer to one single gaming die as 'dice'. For example, "shut up and roll the dice": it does not matter if the game being played happens to only use one die. In short, 'dice' is a group of one or more gaming dies.

A silicon chip die, or a tooling die, or a die used at the mint to make a coin, is a single thing. Two of them are two single things, thus 'dies', even if they're 'glued' together in a package. End of story.

RE: dies not dice
By wordsworm on 8/24/2007 3:36:53 AM , Rating: 4
According to the American Heritage (arguably the best American dictionary), you are correct!
pl. dies A device used for cutting out, forming, or stamping material, especially:

RE: dies not dice
By wordsworm on 8/24/2007 4:57:28 AM , Rating: 3
I tried to give you a 'worth reading' rating, but it seems my ratings don't count anymore.

RE: dies not dice
By Murst on 8/24/2007 10:02:01 AM , Rating: 1
You can't post in and rate in the same article. Even if you rate before you post, your rating will be removed if you later post.

RE: dies not dice
By rcc on 8/24/2007 12:45:12 PM , Rating: 1
Ok, I agree on the whole die issue in silicon etc.

However, regarding Dice that you roll. If there is only one, you roll the die. Dice is plural. Usage of "dice" when rolling a single die is just bad English.

RE: dies not dice
By johnsonx on 8/24/07, Rating: 0
RE: dies not dice
By rcc on 8/24/2007 1:55:06 PM , Rating: 2
It's not a big deal. But dice is purely plural. So if it's one, you are always rolling the die. Given what doesn't get taught in school these days, worse things than this happen.

After all, the die has been cast : ) , all we can do is ride it out and try to change the future.

RE: dies not dice
By masher2 on 8/24/2007 1:05:59 PM , Rating: 2
> "Two of them are two single things, thus 'dies', even if they're 'glued' together in a package. End of story"

Very true. But one of the interesting things about language is that, if you're incorrect long and loud enough, you'll eventually become correct. In the case of IC dies being referring to as dice, we're very close to that point.

RE: dies not dice
By johnsonx on 8/24/07, Rating: 0
RE: dies not dice
By TomZ on 8/25/2007 12:03:27 AM , Rating: 1
I'm guessing masher doesn't care about the ratings.

RE: dies not dice
By theapparition on 8/25/2007 1:58:36 PM , Rating: 2

RE: dies not dice
By johnsonx on 8/24/2007 1:14:19 PM , Rating: 1
They changed the article. I RULE!

RE: dies not dice
By Eris23007 on 8/24/2007 2:28:36 PM , Rating: 2
No, no, no. O'Doyle Rules!!!

RE: dies not dice
By HardwareD00d on 8/25/2007 1:43:11 AM , Rating: 1
Thanks johnsonx, you kicked some serious ass!!!

RE: dies not dice
By Parhel on 8/27/2007 3:52:04 PM , Rating: 2
Could you work on getting people to stop writing "whilst" next please?

"I want people to see my movies in the best formats possible. For [Paramount] to deny people who have Blu-ray sucks!" -- Movie Director Michael Bay
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