Clock-Speed of AMD Opteron "Bulldozer" Microprocessor Revealed

Hardware Vendor Attempts to Benchmark 16-Core AMD Opteron "Interlagos" Chips

by Anton Shilov
03/23/2011 | 10:02 AM

An unknown server end-user or hardware vendor has apparently attempted to test an engineering sample of sixteen-core AMD Opteron "Interlagos" microprocessors powered by Bulldozer micro-architecture. While the benchmark numbers are unavailable, previously unknown clock-speeds of the novelty transpired.


The unidentified recipient of alleged sixteen-core AMD Opteron "Interlagos" utilized processor marked as AMD Eng[ineering] Sample ZS182045TGG43_28 clocked at 1.80GHz as well as Supermicro H8DGU mainboard, according to a listing at web-site. While the benchmark results of the dual-socket 32-core server are unavailable, the list of programs that were run via the Phoronix Test Suite includes a long list of applications and conditions.

It is interesting to note that the unknown hardware vendor or end-user compared to dual-socket 32-core machine against four-socket 48-core AMD Opteron 6168 (12-core, 1900MHz, 6MB L2, 12MB L3, 80W ACP, 115W TDP) server. Potentially, this may indicate efficiency of AMD Bulldozer micro-architecture versus previous-generation microprocessors, but this is not an evidence, though.

While 1.80GHz is hardly a high clock-speed, it does not make a lot of sense to estimate clock-speed potential of Bulldozer in general and Interlagos multi-chip-module (MCM) implementation in particular based on the frequency of the engineering sample. Firstly, thermal design power (TDP) of the new central processing units (CPUs) is unlear; in case the chip belongs to Opteron HE versions (85W TDP), then 1.80GHz for a 16-core chip may not be bad, but for the standard version 1.80GHz does not seem to be very good.

Comparison of Various AMD Opteron and Phenom Microprocessors
Brand Opteron FX Opteron Opteron Opteron Opteron Phenom II
Model Interlagos FX-8130P 6180 SE 6176 6166 HE 4184 1100T
Cores 16 8 12 12 12 6 6
Clock-Speed 1.80GHz n/a 2.50GHz 2.30GHz 1.80GHz 2.80GHz 3.30GHz
L2 Cache 16MB 8MB


L3 Cache Up to 16MB Up to 8MB 12MB 12MB 12MB 6MB 6MB
TDP/ACP n/a 125W 140W/105W 115W/80W 85W/65W 95W/75W 125W
Memory 4-ch, DDR3 2-ch, DDR3 4-ch, DDR3 4-ch, DDR3 4-ch, DDR3 2-ch, DDR3 2-ch, DDR3
Black Edition - + - - - - +
Turbo Core n/a + - - - - +
Packaging G34 AM3+ G34 G34 G34 C32 AM3
Process Technology 32nm SOI 32nm SOI 45nm SOI 45nm SOI 45nm SOI 45nm SOI 45nm SOI

AMD did not comment on the news-story.