A large SMT core with integer circuitry as wide and fast as two CMT cores could in theory have momentarily up to twice an integer performance in a single thread case. Ryzen is shaping up to be the processor series that AMD and PC gaming fans have long been waiting for. Retrieved 6 January The changes over Bulldozer are incremental. Kabini and Temash transition to Beema and Mullins next year, with minimal changes. On 24 October , the first generation tests done by Phoronix confirmed that the performance of Bulldozer CPU was somewhat less than expected.

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List of AMD microprocessors.

The thing is, the current slide is wrong. A tock cycle represents a new architecture while a tick cycle represents a process shrink along with architecture improvements. AMD will be featuring future revisions on Zen on their consumer, server and workstation processors.

AMD’s 2nd Generation Bulldozer Core “Piledriver” Architecture Detailed

Retrieved 10 February As for what this means for single-threaded performance, that remains to be seen. All Ryzen processors piledfiver with new boost technology that are part of the SenseMI feature set. Views Read Edit View history. The processor was found to be extremely power-hungry under load, especially when overclocked, compared to Intel’s Sandy Bridge. The class-action lawsuit, filed on 26 October in the US District Court for the Northern District of California, claims that the Bulldozer CPU does not have eight cores as advertised, but were effectively quad-core chips due to their module count.


It took AMD four years to develop Zen and it will take another four for Zen to complete its shelve time. The construction of all the cores had one thing in common, they were derivatives based on the original Bulldozer design. All of this might be a moot point, if Kaveri had hit its frequency targets.

All FX-series processors are unlocked unless otherwise specified. So Intel is stuck with 14nm on the desktop front for some time too. Retrieved 22 March Views Read Edit View history. Given the overall more consistent performance of the Intel Core i5 K at a lower price, piledriger results left many reviewers underwhelmed.

Piledriver (microarchitecture)

AMD Ryzen processors will feature up to 8 cores and 16 threads with the Zen architecture. This means that AMD will be planning to offer future revisions of Zen with an improved architecture to increase performance and efficiency.

Archived from the original on This site may earn affiliate commissions from the links on this page. Piledriver uses the same “module” design.

Excavator (microarchitecture) – Wikipedia

This page was last edited on 21 Decemberat The performance later substantially increased, as various compiler optimizations and CPU driver fixes were released. Due to dedicated integer cores, the Bulldozer family modules performed roughly like a dual core dual thread processor during sections of code that were either wholly integer or a mix of integer and floating puledriver yet, due to the SMT use of the shared floating point pipelines, the module would perform similarly to a single core dual thread SMT processor SMT2 for a pair of threads saturated with floating point instructions.


The first Bulldozer CPUs were met with a mixed response. A large SMT core with integer circuitry as wide and fast as two CMT cores could in theory have momentarily up to twice an integer performance in a ublldozer thread case.

There was also Steamroller and the Excavator microarchitecture after that. This later generation of Bulldozer core was codenamed Piledriver.

This API allows programmers to achieve greater parallelism, notably in graphics intensive game titles. CMT stays at peak effectiveness while working on a pair threads consisting both of integer code, while under SMT, one or both threads will underperform due to competition for integer pileddiver units.

Retrieved 11 March Retrieved 21 September The Bulldozer cores support most of the instruction sets implemented by Intel processors available at its introduction including SSE4.