http://forums.amd.com/dev...d=208&threadid=112934
Furthermore you could probably combine those 2x128bit FP Units to calculate 1 256bit instruction.

AMD Discloses First Details About Next-Generation Bulldozer Processor
[11/12/2009 03:44 PM]Advanced Micro Devices this week disclosed the first details about its next-generation Bulldozer processor that is due in 2011. Although specifications of the chip seem to be rather promising at this point of time, in about one and a half years from now the central processing unit (CPU) may face a too strong rival and repeat the history of its predecessors.
Based on the information provided by AMD during its annual Analyst Day in November, the first Bulldozer chip code-named Zambezi (which belongs to Orochi family, according to the firm) will feature eight x86 processing engines with multithreading technology, two 128-bit FMAC floating point units, shared L2 cache, shared L3 cache as well as integrated memory controller. AMD also states that the new CPU will feature “extensive new power management innovations”.

The implementation of 128-bit FMAC is quite logical: AMD’s SSE5 set of extensions do feature 128-bit multimedia instructions as well as 128-bit three-operant instructions. In fact, there is a trend of increasing of precision of floating point instructions, as we can observe from the last decade.
What is important to note is that Intel Corp.’s forthcoming Sandy Bridge processor features Advanced Vector Extensions (AVX), which support 256-bit FP operations, something very progressive. Both AMD and Intel have already released documentation regarding AVX and SSE5 for developers, but Intel managed to unleash a new compiler supporting AVX in June ’09, whereas AMD has not managed to roll-out an SSE5-supporting tool. As a result, the vast majority of developers are already capable of creating AVX-capable software; however, almost no designers can make SSE5-capable programs at the moment.
Nevertheless, based on the diagram that AMD demonstrated, the company intends to dramatically improve multithreading performance of its CPUs: two INT schedulers, an FP scheduler and separate data caches for each of four cores should do the job very well.
AMD has not released any data regarding performance of Bulldozer chip, unfortunately, but since the chip designer positions the unit as a solution for desktop and server solutions in 2011, it does expect this 32nm SOI with high-k metal gate power-house to be a high-performer.
Tags: AMD, Bulldozer, Zambezi, Orochi, , SSE5, AVX, 32nm
7:58 pm | Toshiba Reveals 7mm Solid-State Hybrid Drives. Toshiba Announces Slim SSHDs
7:28 pm | AMD Unlikely to Follow Nvidia with Licensing of Graphics Technologies. AMD Not Likely to Follow Nvidia, ARM, Imagination with Graphics IP Licensing
6:56 pm | Intel to Launch Core i7 “Ivy Bridge-E” in Early September. Intel to Release New Extreme-Series Products in September
6:35 pm | Microsoft Ditches Xbox One’s DRM and Always-Online Policies Following Critics from Gamers. After Facing Rage from Gamers, Microsoft Reverses Its Xbox One DRM Policies
11:56 pm | Super Talent Introduces SSD-HDD Hybrid Drive with PCIe Interface. Super Talent Announces 1TB – 2TB SSD-HDD Hybrid with PCI Express Bus
11:32 pm | AMD A-Series “Richland” Overclocked to 8GHz. Enthusiast Pushes Latest AMD Processor to Nearly Record Clock-Speed
11:29 pm | Sony: We Have No Plans to Cut PlayStation 3 Plans Just Yet. Sony May Not Cut PS3 Pricing Ahead of PlayStation 4 Launch
11:23 pm | Chinese Tianhe-2 Supercomputer Becomes World’s Fastest Supercomputer. Intel Xeon “Ivy Bridge-EP” and Xeon Phi Power World’s Top Supercomputer
11:19 pm | GlobalFoundries to Make Application Processors for RockChip. RockChip to Address Tablet SoC Market with 28nm Chips Made by GlobalFoundries
11:12 pm | Asrock Extends Warranty of Flagship Mainboard to Five Years. Asrock Z87 OC Formula Motherboards Have Five Years Warranty
11:08 pm | Apple: We Received 4 – 5 Thousands Requests from U.S. Law Enforcements, Refused to Fulfill As Many As We Could. Apple Committed to Customer Privacy, Explains How It Works with Law Enforcement Organizations
11:04 pm | SanDisk Enhances Flashsoft Software for Server-Side SSD Caching. FlashSoft 3.2 Software Adds Support for Multiple SSDs and SSD Mirroring
8:15 pm | AMD Unveils Server Strategy and Roadmap. AMD Adds Berlin, Seattle and Warsaw Processors into Roadmap
7:38 pm | Nvidia Set to Radically Change Business Model, License Graphics Cores to Others. Nvidia Takes ARM, Imagination Technologies Route, Intends to License Kepler Graphics Tech
