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Kreyren / kreyren

Personal tracking for issues that i need to resolve to be used as a reference for someone else and/or for peer-review of the solution
GNU General Public License v3.0
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GDDR5 tester #88

Open Kreyren opened 3 years ago

Kreyren commented 3 years ago

I need a VRAM tester to diagnose:

Abstract

Make sure that the VRAM is working e.g. using some small interface that runs memtest ideally without soldering e.g. integrated in some tester? image

Requirements

  1. Has to be economical
Kreyren commented 3 years ago

Found:

image

image

Kreyren commented 3 years ago

GDDR5 pinout with description http://www.interfacebus.com/GDDR5-Memory-IC-Pinout.html

image

GDDR5 operates at up to 5Gbps at 1.5 volts.

Kreyren commented 3 years ago

Found https://www.aliexpress.com/item/1005001565166408.html?spm=a2g0o.detail.1000014.1.7145183cdFlmWQ&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.33416.213724.0&scm_id=1007.33416.213724.0&scm-url=1007.33416.213724.0&pvid=ef9aee57-82bd-4d91-91c1-a3b42b79dbd5&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.33416.213724.0,pvid:ef9aee57-82bd-4d91-91c1-a3b42b79dbd5,tpp_buckets:668%230%23131923%2339_668%23888%233325%237_23416%230%23213724%230_23416%234721%2321967%23571_23416%234722%2321972%238_668%232846%238109%231935_668%232717%237562%23458_668%231000022185%231000066059%230_668%233422%2315392%23294_4452%230%23214000%230_4452%233474%2315675%23382_4452%234862%2324463%23472_4452%233098%239599%23181_4452%235108%2323442%2385_4452%233564%2316062%2359

Used as solderless VRAM connector

Kreyren commented 3 years ago

Research on GDDR5 test challenges http://www.koreatest.or.kr/sub02/2009data/report/j09-006.pdf