{"id":23084,"date":"2016-04-14T15:01:20","date_gmt":"2016-04-14T13:01:20","guid":{"rendered":"http:\/\/www.planet3dnow.de\/cms\/?p=23084"},"modified":"2016-04-16T20:46:16","modified_gmt":"2016-04-16T18:46:16","slug":"polaris-mit-bis-zu-1154-mhz-und-neuer-stromsparfunktion","status":"publish","type":"post","link":"https:\/\/www.planet3dnow.de\/cms\/23084-polaris-mit-bis-zu-1154-mhz-und-neuer-stromsparfunktion\/","title":{"rendered":"Polaris mit bis zu 1154 MHz und neuer Stromsparfunktion?"},"content":{"rendered":"<p>Unser fin\u00addi\u00adger User <a href=\"http:\/\/www.planet3dnow.de\/vbulletin\/members\/4934-BoMbY\">BoM\u00adbY<\/a> hat eini\u00adge inter\u00ades\u00adsan\u00adte Infor\u00adma\u00adtio\u00adnen zu AMDs kom\u00admen\u00adden Pola\u00adris-Gra\u00adfik\u00adkar\u00adten gefun\u00adden. In der Mai\u00adling\u00adlis\u00adte zu AMDs Linux-Gra\u00adfik\u00adtrei\u00adber hat ein Mit\u00adar\u00adbei\u00adter Code ein\u00adge\u00adreicht, der ers\u00adten Sup\u00adport f\u00fcr die&nbsp;Pola\u00adris-Fami\u00adlie bie\u00adten soll. Dar\u00adin fin\u00adden sich ein paar inter\u00ades\u00adsan\u00adte Informationen.<\/p>\n<p>Zum einen best\u00e4\u00adtigt sich, dass die n\u00e4chs\u00adten AMD-Gra\u00adfik\u00adkar\u00adten 16 Bit pro Farb\u00adka\u00adnal dar\u00adstel\u00adlen k\u00f6n\u00adnen wer\u00adden. Damit k\u00f6nn\u00adten&nbsp;sich die Pola\u00adris-Gra\u00adfik\u00adkar\u00adten auch f\u00fcr anspruchs\u00advol\u00adle Anwen\u00addun\u00adgen eig\u00adnen. Des\u00adwei\u00adte\u00adren fin\u00adden sich Infor\u00adma\u00adtio\u00adnen zum <span class=\"caps\">RAM<\/span>. Bei Elles\u00adme\u00adre wer\u00adden 8 Kan\u00e4\u00adle und 8 B\u00e4n\u00adke mit 32 Bit ange\u00adge\u00adben, Baf\u00adfin soll nur 4 Kan\u00e4\u00adle bie\u00adten, kann aber den\u00adnoch mit 8 B\u00e4n\u00adken best\u00fcckt wer\u00adden. Aus den Spe\u00adzi\u00adfi\u00adka\u00adtio\u00adnen l\u00e4sst sich able\u00adsen, dass <span class=\"caps\">AMD<\/span> zun\u00e4chst wei\u00adter\u00adhin auf GDDR5-Spei\u00adcher set\u00adzen wird. Bei vier Kan\u00e4\u00adlen ergibt sich ein 128-Bit-Spei\u00adcher\u00adin\u00adter\u00adface, bei acht Kan\u00e4\u00adlen fol\u00adge\u00adrich\u00adtig 256 Bit. In bei\u00adden F\u00e4l\u00adlen ergibt sich eine maxi\u00adma\u00adle Spei\u00adcher\u00adbe\u00adst\u00fc\u00adckung von 8 GiB <span class=\"caps\">GDDR5<\/span>. Als maxi\u00adma\u00adler Takt wird jeweils ein sehr hoher Wert von 6000 MHz ange\u00adge\u00adben. Die\u00adser ent\u00adspricht der effek\u00adti\u00adven Takt\u00adra\u00adte f\u00fcr den GDDR5-Spei\u00adcher und ist so bereits bei Model\u00adlen wie AMDs Rade\u00adon <span class=\"caps\">R9<\/span> 380 oder NVI\u00adDI\u00adAs GeForce <span class=\"caps\">GTX<\/span> 960 zu sehen. Inwie\u00adweit der momen\u00adtan ange\u00adge\u00adbe\u00adne Maxi\u00admal\u00adtakt von 1154 MHz, der f\u00fcr bei\u00adde Chips gel\u00adten soll, auch so in die Serie ein\u00adflie\u00ad\u00dfen wird, muss abge\u00adwar\u00adtet wer\u00adden. Bei ers\u00adten Engi\u00adnee\u00adring Samples (Pro\u00adto\u00adty\u00adpen) gel\u00adten meist ande\u00adre Takt\u00adra\u00adten als bei der Serienproduktion.<\/p>\n<pre class=\"bbcode_code\"><a href=\"https:\/\/cgit.freedesktop.org\/%7Eagd5f\/linux\/commit\/?h=drm-next-4.7-wip-polaris&amp;id=d4ab6c938d0da811b9e6176ba015f9ada51b604d\" target=\"_blank\">drm\/amd\/dal: add core support for Polaris family (v2)<\/a>:\n\n[...]\n\n+\tswitch (cntl-&gt;color_depth) {\n+\tcase COLOR_DEPTH_888:\n+\t\tparams.ucBitPerColor = PANEL_8BIT_PER_COLOR;\n+\t\tbreak;\n+\tcase COLOR_DEPTH_101010:\n+\t\tparams.ucBitPerColor = PANEL_10BIT_PER_COLOR;\n+\t\tbreak;\n+\tcase COLOR_DEPTH_121212:\n+\t\tparams.ucBitPerColor = PANEL_12BIT_PER_COLOR;\n+\t\tbreak;\n+\tcase COLOR_DEPTH_161616:\n+\t\tparams.ucBitPerColor = PANEL_16BIT_PER_COLOR;\n+\t\tbreak;\n+\tdefault:\n+\t\tbreak;\n+\t}\n\n[...]\n\n+\tcase BW_CALCS_VERSION_ELLESMERE:\n+\t\tvbios.number_of_dram_channels = 8;\n+\t\tvbios.dram_channel_width_in_bits = 32;\n+\t\tvbios.number_of_dram_banks = 8;\n+\t\tvbios.high_yclk = bw_int_to_fixed(6000);\n+\t\tvbios.mid_yclk = bw_int_to_fixed(3200);\n+\t\tvbios.low_yclk = bw_int_to_fixed(1000);\n+\t\tvbios.low_sclk = bw_int_to_fixed(300);\n+\t\tvbios.mid_sclk = bw_int_to_fixed(974);\n+\t\tvbios.high_sclk = bw_int_to_fixed(1154);\n\n[...]\n\n+ dceip.number_of_graphics_pipes = 6;\n\n[...]\n\n+\tcase BW_CALCS_VERSION_BAFFIN:\n+\t\tvbios.number_of_dram_channels = 4;\n+\t\tvbios.dram_channel_width_in_bits = 32;\n+\t\tvbios.number_of_dram_banks = 8;\n+\t\tvbios.high_yclk = bw_int_to_fixed(6000);\n+\t\tvbios.mid_yclk = bw_int_to_fixed(3200);\n+\t\tvbios.low_yclk = bw_int_to_fixed(1000);\n+\t\tvbios.low_sclk = bw_int_to_fixed(300);\n+\t\tvbios.mid_sclk = bw_int_to_fixed(974);\n+\t\tvbios.high_sclk = bw_int_to_fixed(1154);\n\n[...]\n\n+ dceip.number_of_graphics_pipes = 5;\n\n[...]<\/pre>\n<p>Wei\u00adter\u00adhin wird Baf\u00adfin wohl bis zu 5 Dis\u00adplays und Elles\u00adme\u00adre derer 6 ansteu\u00adern k\u00f6n\u00adnen. In einem wei\u00adte\u00adren Bei\u00adtrag schreibt Alex Deu\u00adcher etwas zu einem neu\u00aden Strom\u00adspar\u00adme\u00adcha\u00adnis\u00admus, wel\u00adcher erst ein\u00admal nur f\u00fcr Baf\u00adfin zur Ver\u00adf\u00fc\u00adgung ste\u00adhen soll. Wie es aus\u00adsieht, bie\u00adtet <span class=\"caps\">AMD<\/span> bei der neu\u00aden GCN-Gene\u00adra\u00adti\u00adon Power\u00adgating f\u00fcr ein\u00adzel\u00adne CUs (Com\u00adpu\u00adte Units), wel\u00adche meh\u00adre\u00adre Shader b\u00fcn\u00addeln. Die\u00adse Funk\u00adti\u00adon d\u00fcrf\u00adte vor allem im Mobil\u00adseg\u00adment eini\u00adge Freun\u00adde fin\u00adden. Durch die Anpas\u00adsung der akti\u00adven Rechen\u00adclus\u00adter l\u00e4sst sich der Ener\u00adgie\u00adver\u00adbrauch gut steu\u00adern und die Akku\u00adlauf\u00adzeit verl\u00e4ngern.<\/p>\n<pre class=\"bbcode_code\"><a href=\"https:\/\/cgit.freedesktop.org\/%7Eagd5f\/linux\/commit\/?h=drm-next-4.7-wip-polaris&amp;id=4bf04e8f7d0eb36743b0b1c6898ff20b0dac9170\" target=\"_blank\">drm\/amd\/powerplay: add GFX per cu powergating for Baffin<\/a>:\n\n[...]\n\n+\/* This function is for Baffin only for now,\n+ * Powerplay will only control the static per CU Power Gating.\n+ * Dynamic per CU Power Gating will be done in gfx.\n+ *\/\n\n[...]<\/pre>\n<p>Vie\u00adlen Dank <a href=\"http:\/\/www.planet3dnow.de\/vbulletin\/members\/4934-BoMbY\">BoM\u00adbY<\/a> f\u00fcr den Hin\u00adweis im <a href=\"http:\/\/www.planet3dnow.de\/vbulletin\/threads\/423353-AMD-s-Arctic-Islands-GPUs-Greenland-Baffin-Ellesmere?p=5083472&amp;viewfull=1#post5083472\">Forum<\/a>.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Update [16.04.2016]:<\/strong>&nbsp;Lei\u00adder ist uns ein klei\u00adner Feh\u00adler bei den Spei\u00adcher-Inter\u00adfaces unter\u00adlau\u00adfen. Wie schon ange\u00admerkt, han\u00addelt es sich nicht um 256 und 512 Bit, son\u00addern um 128 respek\u00adti\u00adve 256 Bit. Wir bit\u00adten, die\u00adsen Feh\u00adler zu entschuldigen.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Unser fin\u00addi\u00adger User BoM\u00adbY hat eini\u00adge inter\u00ades\u00adsan\u00adte Infor\u00adma\u00adtio\u00adnen zu AMDs kom\u00admen\u00adder Pola\u00adris-Gra\u00adfik\u00adkar\u00adten gefun\u00adden. In der Mai\u00adling\u00adlis\u00adte zu AMDs Linux-Gra\u00adfik\u00adtrei\u00adber hat ein Mit\u00adar\u00adbei\u00adter einen Patch ein\u00adge\u00adreicht, der ers\u00adten Sup\u00adport f\u00fcr die Pola\u00adris-Fami\u00adlie bie\u00adten soll. Dar\u00adin fin\u00adden sich ein paar inter\u00ades\u00adsan\u00adte Infor\u00adma\u00adtio\u00adnen. (\u2026) <a class=\"moretag\" href=\"https:\/\/www.planet3dnow.de\/cms\/23084-polaris-mit-bis-zu-1154-mhz-und-neuer-stromsparfunktion\/\">Wei\u00adter\u00adle\u00adsen&nbsp;\u00bb<\/a><\/p>\n","protected":false},"author":11,"featured_media":74,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"wp_typography_post_enhancements_disabled":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[12,11],"tags":[966,1075,1076,215,1049],"class_list":["post-23084","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aktuelles","category-news","tag-amd","tag-baffin","tag-ellesmere","tag-gcn","tag-polaris","entry"],"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/posts\/23084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/comments?post=23084"}],"version-history":[{"count":9,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/posts\/23084\/revisions"}],"predecessor-version":[{"id":23094,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/posts\/23084\/revisions\/23094"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/media\/74"}],"wp:attachment":[{"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/media?parent=23084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/categories?post=23084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.planet3dnow.de\/cms\/wp-json\/wp\/v2\/tags?post=23084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}