Over at Real World Tech David Kanter takes a look at AMD's Jaguar microarchitecture.
Jaguar is AMDâ€™s first 28nm processor. It is a compact 3.1mm2 core that targets 2-25W devices, in particular tablets, microservers, and consoles. It is a clear derivative of the earlier 40nm Bobcat design, with significant improvements in instruction set architecture and implementation. Some of the highlights include support for AVX, wider 128-bit datapaths, and a higher performance L2 cache. The basic pipeline for Jaguar is shown below, in Figure 1, and clocks in at one cycle longer than Bobcat.
-Mantle now requires Catalyst 14.2 or later drivers.
-Fixed multiple crashes.
-Fixed memory leak when switching between windowed and full screen.
-Optimized memory management which can reduce amount of performance stalls when video memory is overcommitted.
-Improved performance when vsync is used.
-Fixed bug with offset mouse cursor when using full screen and horizontal windows taskbar.
-Multi-GPU: Added initial support for frame pacing for smoother frame rate in full screen mode, enabled by default. Can be disabled in console / User.cfg with â€śRenderDevice.FramePacingMethod 0â€ť.
-Multi-GPU: Fixed black screen when starting on machine with multiple GPUs where the weakest GPU has the display attached to it.
-Multi-GPU: Fixed intermittent crash when switching between windowed and full screen mode when having multiple GPUs
ZDNet reports that in a cost saving move they are moving from 18 data centers to 2.
In practical terms, AMD was able to replace four racks of 4-year-old equipment with one single state-of-the-art and up-to-date server rack, which the company says reduces maintenance and facility infrastructure costs. Taking that knowledge of compressing technology, AMD shrunk 289 racks in its Austin datacenter to just 160 racks in Suwanee. That also cut power requirements by more than half, while reducing the environmental impact of its operations at the same time.
Its like old times. AMD, Nvidia, and Intel like OpenGL. Just like old times Intel has horrible graphics still. VG247 has more on the news.
OpenGL was praised at GDC this week in a joint panel session featuring Nvidiaâ€™s Cass Everitt and John McDonald, AMDâ€™s Graham Sellers and Intelâ€™s Tim Foley. The group claimed that by using OpenGL in their games, developers can expect a performance boost of anywhere between 7-15 times what they would see when using alternatives.
Anandtech has received a teaser from AMD about dual GPUs.
Given the current state of AMDâ€™s 200 series product lineup and the fact that it has been just under a year since the Radeon 7990 launched, this is presumably the start of AMDâ€™s marketing campaign for the obligatory dual-GPU 200 series card. AMDâ€™s note doesnâ€™t leave much in the way of details to speculate with, but considering that 7990 was already pushing around a pair of Tahiti GPUs, it seems a foregone conclusion that any new dual-GPU card would be Hawaii based. In which case, considering that Hawaii cards currently approach 300W, it will be interesting to see just what AMD has up their sleeve for fitting a pair of their best GPUs on a single card.
Dice has released a roughly 400mb patch yesterday to fix a few bugs, and it also improved Mantle performance. A couple of our Game Republik customers conferred. They were on Radeon HD 7850 2GB cards with 3.2GHz Athlon II X4 650s. I tested on the FX 6300 with a Radeon HD 7950 and also ran the built in graph and FPS counter. Performance went up massively, and stuttering seemed almost non existant. This was with the latest Catalyst 14.2 V1.3 beta drivers.
Feb 25 PC Game update notes
-Fix for the so called â€śsound loop crashâ€ť issue that caused the game to freeze
-Fix for an issue that sometimes prevented players from shooting while in the gunner position of a vehicle
-Fix for the headshot icon appearing incorrectly at non-headshot deaths, such as suicide or dying of an explosion
-General stability improvements
-General stability and performance improvements
-Fix for an issue that caused the sky/fog to be either too bright or too dark when Mantle was used
-Added on-screen video memory utilization statistics with â€śRender.DrawScreenInfoâ€ť
AMD has released version 14.2 beta V1.3 of their Catalyst drivers here. These are for GCN graphic cores only.
Â· Thief: Crossfire Profile update and performance improvements for single GPU configurations
Â· Mantle: Multi-GPU configurations (up to 4 GPUs) running Battlefield 4 are now supported
Â· Frame Pacing for Dual Graphics and non-XDMA configurations above 2560x1600 are now supported with Battlefield 3 and Battlefield 4
Â· Dual graphics DirectX 9 application issues have been resolved
Â· Minecraft: missing textures have been resolved
Â· 3D applications no longer see intermittent hangs or application crashes
Â· Resolves corruption issues seen in X-plane