AMD is launching two Phenom II X6 processors: the 1090T and 1055T.
Both models are architecturally identical. That is to say they’re monolithic hexa-core designs with 128KB L1 cache per core (64KB instruction and 64KB data), 512KB of L2 cache per core, and a shared 6MB L3 cache. See graphic below…
This is, of course, a different approach than Intel’s. With Intel’s six-core Gulftown design, Intel increased the size of its shared L3 in order to maintain what its architects considered an optimal ratio between cores and cache. Because AMD isn’t also shifting to a smaller manufacturing process, it really can’t follow suit and keep the Phenom II economically viable at the same time. But as we’ll see in the benchmarks, simply increasing core count is enough to give the X6 a significant boost in threaded apps.

AMD is maintaining the 45 nm core as a result, die size increases from 258 square millimeters to a whopping 346. The NEW Thuban design is closely related to existing hexa-core Istanbul-based Opteron CPUs. From that, we can safely assume the count lands around 904 million, up from approximately 758 million. That’s not as large an increase as Intel’s six-core design because Gulftown’s L3 is transistor-heavy. So, you can argue that AMD is getting the best return for the added complexity.
Though AMD won’t comment directly, we know through a handful of motherboard vendors that there will be Thuban-based quad-core CPUs following in the wake of the 1090T and 1055T. They’ll likely be armed with Turbo CORE as well, and apparently it’ll be possible for certain lucky buyers to unlock the two disabled cores.
| Clock Frequency | Price | HT Speed | Lith. Node | Total L2 Cache | Shared L3 Cache | TDP | Voltage | Max. Temp. | |
|---|---|---|---|---|---|---|---|---|---|
| Phenom II X6 1090T | 3.2 GHz (3.6 GHz with Turbo) | $285 | 4 GT/s | 45 nm SOI | 3MB | 6MB | 125W | 1.125-1.4V | 62 C |
| Phenom II X6 1055T | 2.8 GHz (3.3 GHz with Turbo) | $199 | 4 GT/s | 45 nm SOI | 3MB | 6MB | 125W | 1.125-1.4V | 62 C |
| Phenom II X4 965 Black Edition | 3.4 GHz | $185 | 4 GT/s | 45 nm SOI | 2MB | 6MB | 125W (w/ rev. C3) | .825-1.4V | 62 C |
New Tech, New Names
In a world where every piece of technology-turned-marketing needs to be rolled into the name somehow, AMD follows in Intel’s footsteps by tacking another letter onto its product naming scheme.
Intel has the Core i7-980X, which, dissected, means absolutely nothing informative.
AMD’s new Phenom II X6 1090T and 1055T. At least the II is indicative of a second-generation Phenom family. The X6, of course, tells us that these processors are hexa-core—that’s fairly easy for most folks to figure out. The 1090 and 1055 are arbitrary performance indicators, and the T tells you these CPUs are Turbo CORE-enabled.
The 1090T runs at 3.2 GHz by default (down from the Phenom II X4 965’s 3.4 GHz). When Turbo CORE is active, it can hit speeds of up to 3.6 GHz, though as our experimentation on the next page shows, this isn’t something seen on a regular basis. It sports a 2 GHz (4 GT/s) HyperTransport interconnect and is rated for a 125W TDP.
The 1055T operates at 2.8 GHz by default and runs at up to 3.2 GHz in Turbo CORE mode. It also boasts a 125W TDP, along with the same HyperTransport connection able to move up to 16 GB/s bidirectionally.
Both CPUs should be able to handle a fair amount of overclocking and unlike the Intel’s I have worked on. AMD is always easy to overclock.
As a avid AMD user living in an office of mixed systems including a dual quad Core MAC PRO, my dual dual core AMD 6400 Black Edition have been really struggling. It’s been 2 years and although I feel very happy with the CPU performance of my rig. I have to say I am sick of all the Intel systems lately. I have been missing AMD. I am pretty sure even Intel is missing AMD at this point. SO FINALLY AMD IS KICKING ASS AGAIN! And for less than half of the price of an Intel 6 core!!! If you could use it – I highly recommend checking them out.
