NVIDIA取消對ATI GPU的PhysX物理加速限制

WG_Baby

NVIDIA has reportedly removed the driver-level code which restricts users from having an NVIDIA GeForce GPU process PhysX with an ATI Radeon GPU in the lead, processing graphics. Version 257.15 Beta of the GeForce drivers brought about this change. Possible commercial interests may have played NVIDIA's previous decision to prevent the use of GeForce GPUs to process PhysX with ATI Radeon GPUs, where users could buy an inexpensive GeForce GPU to go with a high-end DirectX 11 compliant Radeon GPU, thereby reducing NVIDIA's margins, though officially NVIDIA maintained that the restriction was in place to ensure Quality Assurance. The present move also seems to have commercial interests in mind, as NVIDIA could clear inventories of GeForce GPUs at least to users of ATI Radeon GPUs. NVIDIA replenished its high-end offering recently with the DirectX 11 compliant GeForce 400 series GPUs.

http://www.techpowerup.com/12330 ... ocessing_PhysX.html

個人簡譯：

据报导，NVIDA将在驱动升级程序中取消对ATI GPU的PhysX代码限制，257.15Beta将首次带来这种改变。此前对ATI GPU的限制出於商业利益的考虑

由於越来越多的用户使用PhysX物理加速的GeForce显卡混合Radeon显卡使用，如若继续限制只会降低NVIDIA的利润，NVIDIA认为此举不仅能让Radeon显卡用户处理旧显卡的库存，也能有利与新一代的GTX400产品铺货

wlrwyk

看上去是不错的消息

万里乌云

学学。。。。。。。。。。

娃娃脸雪糕

老黄脑袋开窍了？估计是G9x库存过多想清货了

wtwang

手上有一闲置GT240，可惜主板没有两条PCIE啊

CCTV5

不管怎么说，都是一件好事

czb336

A 的物理引擎是开放的 大家都能做
N 不说了。。。

MU898

NV继续杯具

liangling

商業，利潤下的抉擇而已。

zidane1980

原来是nv发现低端n卡卖不动了，所以特意放出一个官方破解的混交驱动，为了骗小白继续买高端n卡美其名曰bug

gz_easy

创存在时间最短的"bug"，希望NV对待其他bug也如此。

yamhill

“只不过想单独在A卡上实现的可能性几乎为零。”

求详解……

reeea

是打算清250的库存了吧= =，5870+250基本上没啥PhysX游戏不能玩了，帧速也够了

losr

我的A卡刚卖来着

lamami

让我想起了上一则新闻:

2010- 05-07
NVIDIA最近宣布停止支持Ageia PhysX PPU独立物理加速卡，但没有解释具体原因，同时又声称GPU PhysX物理加速需要NVIDIA显卡才能实现，因而不支持AMD、Intel等第三方显卡产品。

PhysX PPU没了

NVIDIA的一位技术支持人员在physxinfo.com论坛中表示，NVIDIA提供的物理驱动程序尽管在发行说明的产品支持列表里标注着所有Ageia PhysX处理器，但其实8.xx.xx之后的版本都已经不再支持Ageia PPU 128MB PCI/PCI-E。

NVIDIA官方网站上提供的PhysX物理驱动最新版本是9.10.0129，发布说明中确实提到了Ageia PhysX处理器用户需要安装8.09.04之类的旧版本，SDK开发包也需要2.8.1或更早版本，而且操作系统不支持Windows 7。

很多用户要求NVIDIA重新加入对Ageia PPU的支持，但没有得到官方回应。另一方面NVIDIA也在讨论是否发布独立的Ageia PPU驱动，不过至今没有结果。停止支持旧产品是厂商的惯例，Ageia PPU独立物理卡也确实早已不再销售，所以希望继续得到驱动支持恐怕不太现实了。

NVIDIA：GPU PhysX物理加速不支持A卡

A卡支持也没了

NVIDIA在收购Ageia之初曾经表示 PhysX物理技术是开放的，甚至大力支持第三方技术人员在A卡上实现 PhysX，欢迎AMD、Intel在他们的产品中采纳，但处理器双雄没有理睬，都选择了Havok。

至于为何现在又仅限自家显卡支持？NVIDIA官方的解释是：“在PhysX物理处理和图形渲染之间有多重技术关联，要求两种技术紧密配合。为了给用户提供更好的体验，NVIDIA PhysX技术只在NVIDIA GPU上进行了全面验证和实现。”

从去年七月份的186系列驱动开始，NVIDIA就会在监测到AMD显卡存在的时候禁用PhysX物理技术，声称是出于“开发成本、质量保证和商业原因”等方面的考虑。尽管如此，还是有高手进行了破解，使得N卡、A卡并存的时候依然能够开启PhysX物理加速，只不过想单独在A卡上实现的可能性几乎为零。

当然，如果你有两块不同的NVIDIA显卡，完全可以将其中一块当成专用的物理加速卡，这种方案对PhysX应用来说其实是最佳的，可以充分保证两方面的性能，也说明禁止A卡执行PhysX物理加速并非碍于技术上的沟壑。

WG_Baby

NVIDIA 认为这个限制解除属于驱动程序的 bug 而不是特性，WHQL 版将去掉这个 bug.



NVIDIA Forceware ...
Edison 发表于 2010-5-29 01:46

    我正好有一個GTX480給HD5870加速試試，另外還有個閒置的GT240 DDR5

Edison

NVIDIA 认为这个限制解除属于驱动程序的 bug 而不是特性，WHQL 版将去掉这个 bug.

http://www.anandtech.com/show/37 ... a-bug-not-a-feature

NVIDIA Forceware 257 & Heterogeneous GPU PhysX: It's a Bug, Not a Feature
by Ryan Smith on 5/28/2010 12:42:00 PM
Posted in GPUs , PhysX , NVIDIA

Our inbox quickly lit up this morning when we received notice about this NGOHQ article, discussing how NVIDIA had removed the heterogeneous GPU restriction on PhysX in their latest beta drivers. This struck us as a bit of an odd reversal of positions from NVIDIA, and now that we've had a chance to chat with them we finally know what's going on.

As a quick matter of background, starting with the Forceware 186 series NVIDIA blocked GPU/PPU-accelerated PhysX from working on NVIDIA GPUs and AGEIA PPUs whenever a non-NVIDIA GPU was detected as being in the system. It's been a polarizing matter for the GPU community for nearly a year now, with a tug-of-war going on between projects editing the drivers to remove the block, and NVIDIA adding further checks in to their drivers to stop those efforts. In any case, there has been no sign that NVIDIA would be changing their position any time soon.

This brings us to this week's Forceware 257.15 beta drivers and today's clarification from NVIDIA. NGOHQ was correct in that the 257.15 drivers lacked the heterogeneous GPU restriction; however there has been a question of intentions. As we stated previously NVIDIA has held steady to their desire to keep PhysX on pure NVIDIA systems, so to make this change without publically announcing it odd - if only because it deprives them of the chance to sell cards as PhysX accelerators.

We just got done talking with NVIDIA about the matter and they clarified the issue for us. In what we expect is going to be a disappointment for many of you, the lack of a PhysX restriction on the current 257.15 beta drivers is a bug, not a feature - the restriction should have been in those drivers and it was not. NVIDIA will be reinstating the restriction in the WHQL build of these drivers, and presumably all drivers thereafter.

Yes, this is a bug in the latest build of PhysX that was packaged with the driver. We'll be fixing this issue ASAP - the WHQL driver launching in early June won't have this issue. -NVIDIA

For those of you heterogeneous GPU users out there looking to use PhysX, there is some good news that can be salvaged from this however: this won't change the fact that the already released beta drivers lack this restriction. With these drivers you can still have heterogeneous GPUs with PhysX without modifying NVIDIA’s drivers, but you’ll be stuck on these drivers for the time being.

misasdky

绝对有奸情

烧排骨

放开混交而已，还是要留张物理卡以防万一啊

slr

接下来AMD是不是会在新版驱动中限制ATI显卡搭载nv的phx物理卡
rickerlian 发表于 2010-5-28 23:23

这个还真说不清！
“我们为了防止兼容性出现问题·……—）！+！—%”