AMD Phenom II X4 975 Black Edition

AMD released Deneb-core based AMD Phenoms in january 2009. Alot has happened since then in processor markets; frequencies have increased and more cores available in some processors. Even though AMD has Thuban-core based hexacore processors available, the quadcore Denebs are still sold quite a bit. Today we will take a closer look at their newest quadcore processor called AMD Phenom II X4 975. Let’s have a look how it performs in our tests.

About AMD:

Check out AMD’s website for more information about them,


Model Number: Phenom II X4 975
Clock Frequency: 3,6GHz
Max TDP: 125W
Cache Size: L1 Cache 64K, L2 Cache: 512KB per core, L3 Cache: 6MB Shared L3
Process Technology: 45nm
Hypertransport Technology Links: One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2)
Memory: Support for PC2-8500 DDR2 memory and PC3-10600 DDR3 modules
Die Size: 248mm2
Packaging: Socket AM3 (Backwards compatible with AM2+)

The Product:

AMD Phenom II X4 970
Please click on thumbnails for bigger pictures

As before we did not get the retail packaged unit but the tray one. The only difference between tray and retail is the included cooler in the retail one. On top of the processor there are the typical model name, manufacturing week, and TDP value information. Our sample processors model name is HDZ975FBK4DGM. The H means it belongs to Phenom family, D indicates it being desktop processor, FB means 125W TDP value and K for AM3 socket. More information about the meanings of model names can be found from AMD:s PDF file located at AMD:s site

AMD Phenom II X4 975
Please click on thumbnails for bigger pictures

Our sample unit is, as mentioned, based on Deneb core. It is made using 45nm process and has a standard vcore of 1.375V. Unlike 6-core Thubans, the Deneb core does not support Turbo Core technology. Our sample unit is clocked at 3600MHz, has shared 6MB L3 cache, 512kb L2 cache for each core and multiplier of 18. Thanks to AMD Cool&Quiet technology, the processor will throttle down to 800MHz per core when more computing power is not needed. As seen in the cpu-z memory tab shot, the Phenom II 975 memory controller supports dual channel memory (for both DDR2 and DDR3, depending on your motherboard). Northbridge (located inside the processor) works at 2000MHz frequency.

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