amd cpu&gpu 討論post #11 睇#1先

都係用膠水
只係今次不再似 Zen / Zen+ 咁 揀 ram die

今代係有單獨i/o die，唔似之前咁經過ram再返入cpu
好耐之前發報會已經講過啦

你地係唔會係玩野，定根本無在意
明明呢個先係zen 2嘅特質
唔係淨講緊今代高左幾多0.幾ghz
而且今代zen2對ram嘅延遲比上一代zen+差
但佢重點係唔再咁ram，所以先冇咩所謂

咪又係伏die

你都係要比足夠頻寬落2代IF總線

When doing serious memory overclocking, it can happen that the Infinity Fabric can't handle the increased memory speed. Remember, Infinity Fabric runs at a frequency synchronized to memory. For example, with DDR-3200 memory (which runs at 1600 MHz), Infinity Fabric will operate at 1600 MHz. This is the default of Zen, Zen+ and also Zen 2. Unlike earlier generations, the new BIOS offers UCLK options for "Auto", "UCLK==MEMCLK" and "UCLK==MEMCLK/2". The last option is new and will come in handy when overclocking your memory, to achieve stability, but at the cost of some Infinity Fabric bandwidth.

https://www.techpowerup.com/253954/amd-ryzen-3000-zen-2-bios-analysis-reveals-new-options-for-overclocking-tweaking

Msi 1.4v

新 Athlon 會用 Vega 9 igpu

All core 推到4.15ghz
不過Tdie 73度
Ryzen 過熱係咪睇Tctl + 10度個data?

而家all core R15 1830/ single core 172

比左咩電壓？

係咪收手算

可以試 4.2 @1.4v

試左 跑到一半黑moon

應該上4.2 比電壓不夠
1.36上 4.15 ok la

而家R15 跑哂OpenGL/ all core/ single core 先

上4.2 温度高D 怕熱留後 4.15

ryzen 3唔駛側重RAM都幾正，即轉會

唔敢用offset
靠LLC去offset 佢算

係 我覺得跑4.2既話 散熱要換

Zen2 好在不挑 ram 了 但你要比足夠頻寬落 if 度

R20
4198分 77度
好撚熱啊

跑 R20 温度會高 因為用到 avx

終於可以OC
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