PCDVD數位科技討論區 - AMD將更新驅動修復RX480供電問題?!

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引用:

作者Quaker2013

他們是玩挖礦的，用多張RX480挖礦風險很高，就算不超抽75W*3還是很恐怖，之前有人用
四張270x挖礦，上機不到一小時就燒了，礦機還是盡量找電源設計比較寬裕的顯卡，盡量少
吃主板的電源。

我還以為現在不會有人拿顯示卡去挖礦, 而是改用USB的ASIC專用挖礦芯片 :shy:

引用:

作者u3350829

好勇敢....拿480去挖礦這根本就故意要讓MB燒的吧!XD
是說這樣搞倒底顯卡廠商要不要賠償? 挖礦應該會比
正常使用還要操...來去跟米國同事說快拿去挖礦比較
會燒:p

480是標榜可以crossfire的，
如果amd連3 way的使用情況都沒考慮進供電設計，
在溫度、抽電比例與時脈上都沒有設定自動調整的模式，
那這100%屬於amd的錯。

我彷彿又見到一個老畫面 :
amd 那些老不死的無腦高層又在下指導棋，無知地推翻掉基層工程師的建言。

現階段真的看不出來是lisa 蘇是白癡，還是那個印度佬或其他高層在耍白癡。

引用:

作者u3350829

顯示卡也可跑通用運算有規定說買卡不能挖礦 :confused:
講不過去吧...

誰知道會超抽這麼離譜不符合spec
這就是大家都照規矩來有人偏要逆向車道超車難怪車禍

現在還要多了一樣買PCI-E顯示卡要先確認有無符合PCI-SIG規範
回家要添購示波器數位電表勾表等傢絲出來測

現在是怎樣用張顯示卡也得練到測試工程師的水準嗎

希望這不是chip問題而是pcb layout出包不然重lay非公版也解決不了
這下真的要喝農藥

驅動到底出了沒?怎麼沒消息了?

出了 AMD改調整卡上6 phase power module
但是tom's 一樣給出很中肯意見 --- 標準存在有其意義

Above The Norm, But Less Drama

Our measurements show that the motherboard’s PCIe slot averages 6.74A at 12V. This means that our numbers exceed the norm by 1.24A, a significant 23 percent. And this is already counting from the absolute maximum allowed by the PCI-SIG’s specifications.

In our launch article, we put our result into a broader context and pointed out that this shouldn’t result in any damages, as long as the system’s hardware conforms to the usual standards. Here’s a quick recap:

Quote from our Launch Article:
"To be clear, your motherboard isn't going to catch fire. But standards exist for a reason."

Thus, any claims about unnecessarily fanning flames or misrepresenting our results are unwarranted. We presented our data and our analysis, and it's difficult to control what conclusions others draw and publish.

http://www.tomshardware.com/reviews...ments,4622.html

AMD聲明全文

引用:

We promised an update today (July 5, 2016) following concerns around the Radeon™ RX 480 drawing excess current from the PCIe bus. Although we are confident that the levels of reported power draws by the Radeon RX 480 do not pose a risk of damage to motherboards or other PC components based on expected usage, we are serious about addressing this topic and allaying outstanding concerns. Towards that end, we assembled a worldwide team this past weekend to investigate and develop a driver update to improve the power draw. We’re pleased to report that this driver—Radeon Software 16.7.1—is now undergoing final testing and will be released to the public in the next 48 hours.

In this driver we’ve implemented a change to address power distribution on the Radeon RX 480 – this change will lower current drawn from the PCIe bus.

Separately, we’ve also included an option to reduce total power with minimal performance impact. Users will find this as the “compatibility” UI toggle in the Global Settings menu of Radeon Settings. This toggle is “off” by default.

Finally, we’ve implemented a collection of performance improvements for the Polaris architecture that yield performance uplifts in popular game titles of up to 3%1. These optimizations are designed to improve the performance of the Radeon RX 480, and should substantially offset the performance impact for users who choose to activate the “compatibility” toggle.

AMD is committed to delivering high quality and high performance products, and we’ll continue to provide users with more control over their product’s performance and efficiency. We appreciate all the feedback so far, and we’ll continue to bring further performance and performance/W optimizations to the Radeon RX 480.

1: Based on data running ’Total War: Warhammer’, ultra settings, 1080p resolution. Radeon Software 16.6.2 74.2FPS vs Radeon Software 16.7.1 78.3FPS; Metro Last Light, very high settings, 1080p resolution, 80.9FPS vs 82.7 FPS. Witcher 3, Ultra settings, 1440p, 31.5FPS vs 32.5, Far Cry 4, ultra settings, 1440p, 54.65FPS vs 56.38FPS, 3DMark11 Extreme, 22.8 vs 23.7 System config: Core i7-5960X, 16GB DDR4-2666MHz, Gigabyte X99-UD4, Windows 10 64-bit. Performance figures are not average, may vary from run-to-run.

所以新的driver 號稱2種選項:
1. 少抽PCIe 電之外(但是從湯姆大叔看來也沒差多少), 還兼優化了一下效能3%;
2. 提供compatbility mode , 暗示在最小程度影響性能下降低功耗, 據說是朝降頻來走.

修復問題還有效能增加3%?

我說l哥,E哥,老濕哥你們來說個2句

引用:

作者MUS

AMD聲明全文
所以新的driver 號稱2種選項:
1. 少抽PCIe 電之外(但是從湯姆大叔看來也沒差多少), 還兼優化了一下效能3%;
2. 提供compatbility mode , 暗示在最小程度影響性能下降低功耗, 據說是朝降頻來走.

tom拿到驅動了嗎, AMD不是跳票到後天才丟driver嗎

引用:

作者MUS

1. 少抽PCIe 電之外(但是從湯姆大叔看來也沒差多少), 還兼優化了一下效能3%;
2. 提供compatbility mode , 暗示在最小程度影響性能下降低功耗, 據說是朝降頻來走.

1.英文原文也沒看到tom 沒差多少是多少? 2.英文原文也沒說運作方式卻據說是朝降頻來走還是以上兩點都是自己揣測出來的 :confused:

總功耗變化不大
就是把PCI-E 抽的電轉移一部分給 psu的6PIN而已

這樣的做法相對安全
因為PSU的6PIN 理論上抽電比PCI-E 安全多~ 超抽的容許範圍也比較大