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(转)——微软的“良心”难题:DX12会支持Windows 7吗? 微软上周正式公布了DirectX 12图形规范(下称DX12),虽然给人的感觉是重磅升级并不多,不过带来的类似AMD Mantle优化依然让开发者兴奋不已,而且大多数DX11显卡都能支持DX12。此外,除了硬件上的要求之外,DX12显然也需要操作系统支持,Windows 8/8.1没问题,但是Windows 7呢?DX10在Vista上的悲剧会不会再次上演,这可要考验微软的“良心”了。 考虑到DX12游戏要到明年底才能真正上市,因此未来的Windows 9系统理所应当支持DX12,现在的Windows 8/8.1也没有问题,如何处理Windows 7的DX12支持才是难题。 从技术上看,DX12算是DX11的延伸,关键性更新对显示要求没什么变化,Win7支持起来没有问题,这次微软是找不到Windows XP那样不能支持DX10的技术理由了。 但是,Windows 7支持DX12与否也不是一个技术选择,而是微软的现实考量。微软好不容易要在下个月终结Windows XP的寿命了,并给出了优惠100美元的升级方案,而庞大的WinXP市场份额也会释放出一些空间给新系统, 微软的推荐则是升级到Windows 8/8.1,而Windows 7的支持明年就要到期,去年底就停止了零售,OEM版授权明年也会到期。从微软的角度来说支持到期的产品,大规模技术升级不可能了,只会有安全补丁更新。 为了推广更符合移动市场的Windows 8.1系统,微软最合适的做法就是让Windows 8/8.1明年的新系统才能支持DX12,就好像支持DX11.2需要Windows 8.1系统那样,问题的关键是微软敢不敢如此绝情。Windows XP之后的最大份额是Windows 7,而且这个系统还是Steam玩家社区最受欢迎的系统,如果Windows 7不能支持DX12,开发者及游戏玩家显然会很愤怒,微软要准备好面对如潮般的尖锐批评了。 此外,如果微软真的狠下心来给Win7断奶,那也会给AMD的Mantle一线生机,不管DX12中的底层优化技术来自何方(总觉得跟AMD很有基情),微软最愿意看到的现象一定是DX12大一统,但是如果DX12不能支持Windows 7,那么Mantle存活下来的可能会非常大,有可能跟DX12并驾齐驱,本来这二者也不是水火不相容的局面。 啰嗦了这么多,归根到底一个问题就是Windows 7的DX12支持不是技术问题,这要考验微软的智慧与勇气。断绝Windows 7的DX12支持是个双刃剑,有可能帮助微软提升新系统的份额,但是也有可能带来逆反效果,反让玩家安心使用Windows 7系统,一如Windows XP的经历那样,XP的兴盛造就了DX9的辉煌。
Sapphire R9 290X Tri-X 1600p和4K性能超titan默认 December 22nd, 2013 at 3:55 pm - AuthorZardon AMD fans have been waiting on this for a long time, the eagerly awaited Sapphire custom version of AMD’s R9 290X, featuring their cutting edge Tri-X cooling system. Sapphire have not only adopted their impressive three fan cooler, but they have tweaked the core and memory speeds a little, offering higher ‘out of the box’ performance. Is this the fastest, most powerful (single GPU) AMD video card that money can buy?Today we supplement our tests by analysing performance at 3840×2160 (4k HD) on the Asus PQ321QE. We recently acquired one of these screens for high end graphics card reviews. Sure, the £2999.99 asking price will mean very few can afford the upgrade right now, but in the next year we expect the cost to drop.Setting up this monitor is simple with both AMD and Nvidia hardware (via DisplayPort cable) and we didn’t experience any issues. To achieve a refresh rate of 60hz after the Forceware or Catalyst drivers were installed we enable the Multi Stream Transport mode within a submenu of the Asus PQ321QE.On paper there is no doubt that the R9 290X is a monster, clocked at 1GHZ. The Sapphire R9 290X Tri-X core is clocked higher, to 1,040mhzout of the box, and the memory speeds are set at 1,300mhz (5.2Gbps effective), a 50mhz overclock on the reference card (1,250mhz). The Hawaii GPU is built on the 28nm process and the card comprises 6.2 billion transistors. The R9 290X has 64 ROP’s, 176 TMU’s and 2,816 unifed shaders. The 4GB of GDDR5 memory runs at 1,250mhz (5Gbps effective) and is connected via an ultra wide 512 bit memory interface. We have tested the reference card when it launched and while we were impressed – the cooling solution was woefully inadequate. The R9 290X, along with the R7 260X features a programmable audio pipeline. The R9 270X and R9 280X don’t. This new TrueAudio technology is designed for game audio artists and engineers, so they can ‘bring their artistic vision beyond sound production into the realm of sound processing’. This technology is intended to transform game audio as programmable shaders transformed graphics in the following ways: Programmable audio pipeline grants artistic freedom to game audio engineers for sound processing. Easy to access through popular audio libraries used by top game developers. Fundamentally redefines the nature of a modern PC graphics card. Spatialization, reverb, mastering limiters and simultaneous voices are only the beginning. We received one of the first samples out of Sapphire’s HQ in the Far East and as such it wasn’t shipped in a retail box.We did however get the image above direct from Sapphire PR, highlighting the new ‘robot’ box artwork.The bundle includes a software disc, product literature, an HDMI cable and some power converter cables.The Sapphire R9 290X Tri-X OC is built on a black PCB and features the Tri-X cooler which we have seen in recent months on the excellent R9 290X Toxic Edition and R9 290 Tri-X OC models.The card has a DVI-I, DVI-D, full sized HDMI and DisplayPort connectors. R9 Series graphics cards can now support up to three HDMI/DVI displays for use with AMD Eyefinity technology. A set of displays which support identical timings is required to enable this feature. The display clocks and timing for this feature are configured at boot time. As such, display hot‐plugging is not supported for the third HDMI/DVI connection. A reboot is required to enable three HDMI/DVI displays.The Sapphire R9 290X Tri-X takes power from an 8 pin and a 6 pin power connector, the same as the AMD R9 290X reference card.
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