AMD K12 AMD ZEN 17h - spekulace a info

[del42sa]

Doubled core density

8core CCX je potvrzeno

FP with to 256-bit

[Krteq]

Chiplets potvrzeny

[del42sa]

Doubled load/store bandwidth

14nm IO die

[del42sa]

Revolutionary new approach

12:54PM EST - Optimized IO die improves latency and power

12:54PM EST - 7nm CPU chiplets

12:54PM EST - 14nm IO die

12:54PM EST - Zen 2 Each IP is its optimal technology

12:54PM EST - Enabled configurability, increased peak compute

12:54PM EST - Zen introduced a multi-chip approach

12:54PM EST - AMD will stay focused

12:54PM EST - Hardware enhanced spectre mitigations

12:53PM EST - Memory Encryption with Increased Flexibility

12:53PM EST - Security

12:53PM EST - Maintained high throughput modes

12:53PM EST - Increased dispatch/retire

12:53PM EST - Doubled load/store bandwidth

12:53PM EST - FP with to 256-bit

12:53PM EST - Larger op-cache

12:53PM EST - Re-optimized instruction cache

12:53PM EST - Better instruction pre-fetching

12:53PM EST - Improved branch predictor

12:53PM EST - Half energy per operation

12:53PM EST - Doubled core density

12:53PM EST - Improved pipeline, DOuble loading point and load store

12:52PM EST - Modular Design

12:52PM EST - More Security Elements

12:52PM EST - 2nd Gen IF

12:52PM EST - CPU Core Execution Enhancements

[del42sa]

zajímavé

[Krteq]

Jj, jsem zvedav, těch vylepšení je celkem dost.

IF v2.. hmmm, na ten jsem zvědav asi nejvíc.

[Leon_]

Doubled core density

8core CCX je potvrzeno
FP with to 256-bit

tiež som to čítal a zbystril, ale radšej som nejasal, že co to vlastne je
to FP znamena čo - pre nas?

[Comby]

14nm IO je z GloFo? Konfiguracia je 2 CPU + 1 IO (16 +1), t.j. 64 + 4?

[del42sa]

to FP znamena čo - pre nas?

Floating Point ?

[havli]

Cili "rychle" AVX2?

[HEAD]

Major Node, Significant Investment
Faster, Smaller, Lower Power Transistors (2x Density, 0.5x Power, 1.25x Performance at same performance/power)
Multiple Products in Development
Deep Partnership with TSMC and Design Automation Vendors

AMD has made significant changes to their CPU architecture which help deliver twice the throughput of their first generation Zen architecture. The major points include an entirely redesigned execution pipeline, major floating point advances with doubled the floating point to 256-bit and double bandwidth for load/store units. One of the key upgrades for Zen 2 is the doubling of the core density which means we are now looking at 2x the core count for each core complex (CCX) which will now be risen to 8 per CCX compared to 4 per CCX.

Improved Execution Pipeline
Doubled Floating Point (256-bit) and Load/Store (Doubled Bandwidth)
Doubled Core Density
Half the Energy Per Operation
Improved Branch Prediction
Better Instruction Pre-Fetching
Re-Optimized Instruction Cache
Larger Op Cache
Increased Dispatch / Retire Bandwidth
Maintaining High Throughput for All Modes

Vzhledem ke zmenam si troufam tvrdit, ze to porazi 9900k jak nic a bude to zrat pulku co 9900k.

[Jan Olšan]

Doubled core density

8core CCX je potvrzeno

Nee, to může znamenat dvojnásobbný počet jader jako že úplně celkem (64 v Epyc2), ne že jich bude víc v CCX.

Hmm, když se potvrdila ta slepencová šílenost, tak tím pádem nevíme nic o AM4. Jádra budou stejný, to je jasný, ale počet je tím pádem ???. Doufám že to bude aspoň těch 12...

[Jan Olšan]

Cili "rychle" AVX2?

Minimálně AVX, ale AVX2 (integer) se s tím asi sveze.

[flanker]

to FP 256-bit mě taky zaujalo, s tím doubled densidy byhc počkal, zda to není míněno poměrem na velikost plochy 7nm vs 14nm

Jinak jsme asi blbej, ale co je ten "chiplet"?

[del42sa]

Nee, to může znamenat dvojnásobbný počet jader (64 v Epyc2).

One of the key upgrades for Zen 2 is the doubling of the core density which means we are now looking at 2x the core count for each core complex (CCX) which will now be risen to 8 per CCX compared to 4 per CCX.

[havli]

Vypada to poprve v historii AMD na specialni kremik pro servery, co se v desktopu neobjevi (aspon ne jako normal mainstream, HEDT kdo vi).

Do AM4 bych ocekaval stale single-chip reseni, tam mi oddelene I/O nedava smysl. Otazka je, jestli tam ty 8jadrove CCX daji dva nebo jeden.

[del42sa]

clean kill

[Jan Olšan]

Jinak jsme asi blbej, ale co je ten "chiplet"?

čípek

[Krteq]

Do AM4 bych ocekaval stale single-chip reseni, tam mi oddelene I/O nedava smysl. Otazka je, jestli tam ty 8jadrove CCX daji dva nebo jeden.

V CCX teď krom ALU a IF skoro nic není, všechno je v tom I/O čipu.

[del42sa]

já myslím, že pro desktop budou stále 4core CCX a nebo budou polovinu vypínat (?)