| General information | |
|---|---|
| Launched | January 7, 2010 |
| Designed by | Intel |
| CPUID code | 02065x |
| Product code | 80616 |
| Performance | |
| Max.CPUclock rate | 2.27 GHz to 3.6 GHz |
| Cache | |
| L2 cache | 2×256 KB |
| L3 cache | 4 MB |
| Architecture and classification | |
| Application | Desktop |
| Technology node | 32 nm |
| Microarchitecture | Westmere |
| Instruction set | x86,x86-64,MMX,SSE,SSE2,SSE3,SSSE3,SSE4.1,SSE4.2,AES-NI |
| Physical specifications | |
| Cores |
|
| Socket | |
| Products, models, variants | |
| Brand names | |
Clarkdale is the codename forIntel's first-generationCore i5,i3 and Pentium dual-core desktop processors.[1] It is closely related to the mobileArrandale processor; both use dual-core dies based on the32 nmWestmere microarchitecture and have integrated Graphics,PCI Express andDMI links built-in.
Clarkdale is the successor of theWolfdale used in desktopIntel Core 2,Celeron andPentium Dual-Core processors. Unlike its predecessor, Clarkdale already contains the majornorth bridge components, such as memory controller, PCI Express for external graphics, integrated graphics and the DMI connector, making it possible to build more compact systems without a separate north bridge or discrete graphics likeLynnfield.
The Clarkdale processor package contains two dies: the 32 nm processor die with the I/O connections, and the 45 nm graphics and integrated memory controller die.[2] Physical separation of the processor die and memory controller die resulted in increased memory latency.
TheCPUID for Clarkdale is family 6, model 37 (2065x). The mobile equivalent of Clarkdale isArrandale.
Clarkdale processors are sold under theIntel Core,Pentium andCeleron brand names, with varying feature sets. The Core i5 versions generally have all features enabled, with the Core i5-661 and Core i5-655K models lackingIntel VT-d andTXT like the Core i3, which also does not supportTurbo Boost andAES new instructions. In addition, the Pentium and Celeron versions do not haveSMT, and they can only use a reduced amount of third-levelcache.
The Xeon L340x line has a lower clock frequency and thermal design power, and supports unbufferedECC memory in addition to the features of the Core i5-6xx, but has support for the integrated graphics disabled.
Importantly, although thememory controller in Clarkdale processors is on-package, it is on a separatedie from the CPU cores, and thus has increased latency compared toprocessor architectures which integrate it on-die with the main CPU cores.[3]
| Brand Name | Model (list) | Logo | L3 Cache size | Thermal Design Power |
|---|---|---|---|---|
| Celeron | G1xxx | 2 MB | 73 W | |
| Pentium | G6xxx | 3 MB | ||
| Core i3 | i3-5xx | 4 MB | ||
| Core i5 | i5-6xx | 73–87 W | ||
| Xeon | L340x | 4 MB | 30 W |