8156777 wrote:
＝＝＝＝跑分算不算呢...(恕刪)
遊戲卡輸了遊戲就失敗了
跑分？那是買這張卡的人要的目的嗎
個人積分：16分
文章編號：36726647
個人積分：85分
文章編號：36727637
8156777 wrote:
預設 那請問你的68...(恕刪)
我前面會問說要實際有7970的大大來說明會比較好，因為網路上測試文章跟我自己跑實際差異很大，不是過高就是過低，由其bf3我自己跑下來測試在2560*1600 4xmsaa下，一般都在50~55fps，最高則在62fps，但是看網路上各大文章來說不是偏低在45fps那就有點奇怪了，我個人是i7-950+680都預設，而網站那些都是拿更高階硬體超頻跑測試，沒道理比我的預設都還來的低......
至於紅屏問題等你有在單螢幕解析過2560*1600以上再來憂慮，串連螢幕下的超寬高解析則沒這個問題，不然基本1080p下紅屏是遇不到，不過從301.42~304.48驅動來說，紅屏問題只要解析不開超過2880*1620就不會無預警發生，比之前的驅動版本只要開超過2560*1600好多了點，但還是希望能透過驅動解決gpu本身缺陷問題。
個人積分：140分
文章編號：36728477
個人積分：9分
文章編號：36729123
個人積分：434分
文章編號：36731095
http://www.techpowerup.com/reviews/AMD/HD_7970_GHz_Edition/33.html
AMD已經達到了目標：HD7970GHz版是世界上最快的單核心顯卡。比常規的HD7970高出125MHz的核心頻率，使得性能上小幅超越了NVIDIA的GTX 680，達到了2%的更高性能。在2560x1600解析度下，比之680，有8％的超越，但這並不是因為HD 7970 GHz版有多強，而是由於NVIDIA在高解析度下實在太弱。與非GHz版的HD7970相比，今天測試的GHz版要平均高出10％左右的性能，稱得上是相當大的改善。
不幸的是，隨著性能的提高是功耗的增加。看來，AMD為了穩定的達到更高的核心頻率，挑了一些體質更好的晶片作為GHz版的核心。因此，我們可以看到遊戲時功耗顯著的提升。即使考慮到增加了10％的性能，每瓦性能仍然比原版HD7970差很多。更高的功耗也直接影響到溫度和噪音。雖然滿載溫度在83°C以下，但噪音是完全不可接受的。該卡滿載運行在51分貝，這是測試過的最吵的卡，比NVIDIA的GeForce GTX480還要吵。
AMD公司已經推出了一個新的“boost”技術，但它無法和Nvidia的動態超頻相比。我們認為一個更準確的描述是：當它檢測電源超載情況時，核心頻率會從預設的1050mhz【下降】到1000mhz，並降低電壓，以確保穩定運行，這就是AMD所謂的“boost”技術。
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到此是wss900ph的翻譯
後面是沒翻到的部分個人自己補上
HD 7970 GHz版的價位是 $499，與GTX680相同，第一眼看到或許會覺得很誘人，但NVIDIA的卡在功耗，音量，手動超頻上勝出，整體上是更好的。
我發現AMD's HD 7970 GHz版 $499的價位太高而沒辦法吸引到太多對GTX680的關注，如果HD 7970 GHz版的價位是 $450我才會考慮它，否則我會很樂意的選擇更有CP值但效能差不多的GTX680甚至是GTX670
個人積分：933分
文章編號：36731280
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個人積分：30分
文章編號：36734967
個人積分：46分
文章編號：36735890
個人積分：13分
文章編號：36737737
eclair_lave wrote:
7970還能效調到這程度不錯了
先天上7900系列就比較吃虧，雙精度能力高的設計效率也差些，(7900系列是1/4，680是1/12)
往下看看7800系列就明顯效率好很多(印象裡7800系列的雙精度設計應該是是1/8)
這次NV棋高一著是事實，下一代AMD應該也會這樣把專業用跟桌面一般用的設計分開來，年底就看得到雙方的28nm製程第二代設計產品了
與其說nV這次棋高一著，還不如說他捨棄掉了自己最自豪的通用運算才能有這樣的成績.....通用運算不是nV最喜歡拿來當顯卡付加價值的功能嘛?
至於7970GHZ版，加壓又超頻，最大功耗只比非GHZ版僅多出3w....我是覺得功耗控制進步很多了....
TechPower的測試
不過我有個小問題，雙精度浮點數好像沒甚麼遊戲使用?
我能理解AMD為了APU的通用運算必須在7xxx系列上面練兵就是了
個人積分：31分
文章編號：36738381
ccyew wrote:
與其說nV這次棋高一...(恕刪)
Idle: Windows 7 Aero sitting at the desktop (1280x1024 32-bit) all windows closed, drivers installed. Card left to warm up in idle until power draw is stable.
Multi-Monitor: Two monitors connected to the tested card, which use different display timings. Windows 7 Aero sitting at the desktop (1280x1024 32-bit) all windows closed, drivers installed. Card left to warm up in idle until power draw is stable.
Average: Crysis 2 at 1920x1200, Extreme profile, representing a typical gaming power draw. Average of all readings (12 per second) while the benchmark was rendering (no title/loading screen).
Peak: Crysis 2 at 1920x1200, Extreme profile, representing a typical gaming power draw. Highest single reading during the test.
Maximum: Furmark Stability Test at 1280x1024, 0xAA. This results in a very high non-game power consumption that can typically be reached only with stress testing applications. Card left running stress test until power draw converged to a stable value. On cards with power limiting systems we will disable the power limiting system or configure it to the highest available setting - if possible. We will also use the highest single reading from a Furmark run which is obtained by measuring faster than when the power limit can kick in.
Blu-ray Playback: Power DVD 9 Ultra is used at a resolution of 1920x1200 to play back the Batman: The Dark Knight disc with GPU acceleration turned on. Playback starts around timecode 1:19 which has the highest data rates on the BD with up to 40 Mb/s. Playback left running until power draw converged to a stable value.
Power consumption in idle, multi-monitor and Blu-ray is roughly the same, or slightly higher than on the HD 7970. Compared to the NVIDIA GTX 680, idle and multi-monitor numbers are similar, but the power draw during Blu-ray playback is much higher. NVIDIA has also worked on their drivers to further reduce multi-monitor and Blu-ray power consumption, so they clearly lead here (these improvements are not included in our data yet).
During gaming we see much higher power consumption compared to the normal HD 7970. This increase is big, even with the performance improvements taken into account, performance per Watt is more than 15% lower. Only Furmark maximum power has remained the same, it seems that AMD's power limiter is configured exactly the same as on the non-GHz cards, which is no surprise as both use the same board and only the GPU is from a better bin.
A new feature of the HD 7900 Series is AMD ZeroCore Power, which will power off the card as soon as the monitor output is blanked, during screen saver for example. For additional power and noise reduction the fan will stop in this state, too. We measured a power consumption of 1.11 Watts for the whole graphics card during ZeroCore Power. As soon as you move the mouse the PC is back immediately, there is no lag or any delay.
Please note that ZeroCore Power seems to engage only when the screen is completely static. If you have an application running that draws to the screen, the monitor will go black, but the card will not enter the low power state or return from it quickly. To avoid this, minimize all applications and let Windows sit at the desktop.
NVIDIA has no competing technology to ZeroCore, so AMD is at a clear advantage here.
Idle:
7970 12W
7970Ghz 14W
Multi-Monitor:
7970 45W
7970Ghz 46W
Average:
7970 163W
7970Ghz 209W
Peak:
7970 189W
7970Ghz 238W
Maximum:
7970 270W
7970Ghz 273W
Blue-ray:
7970 53W
7970Ghz 57W
這中間的差距大夥兒自己看看吧.
低負載待機的情況下功耗表現跟上一版幾乎相同
連接雙螢幕後功耗也未有明顯差距
CRYSIS 2 1920*1200 EXTREME 兩者差距浮現 平均差距達46W
而遊戲中峰值的差距可達49W
Furmark Stability 穩定度燒機測試,兩者皆達270W而差距僅剩3W
文中有談到遊戲中的效能/功耗比是有倒退的現象 (約15%)
代表Ghz版本比普通版本吃更多的電但效能上升幅度沒有跟上來.
最後談到AMD的新技術ZeroCore Power讓新系列加分不少,這也是NV所沒有的技術.
假如使用者在電腦進入休眠或者螢幕保護程式的狀態下,顯卡本身會停止運作 (包括風扇)
功耗可以低到1.11W. 而電腦恢復到正常運作階段時顯卡也會立即恢復運作且沒有延遲.
但使用者如有開啟程式並顯現在桌面上就可能導致此功能失效. 要避免這情形請將所有程式
最小化,並保持在桌面下.
