Re: [測試] 記憶體雙通道 8G*2

看板PC_Shopping (個人電腦購買)作者 (星野純)時間12年前 (2013/09/10 23:58), 編輯推噓11(11017)
留言28則, 10人參與, 最新討論串4/4 (看更多)
筆電簡單測一下,均跑 1333 時序 9-9-9-24 1T 兩組各跑五次,取最高值比較 Model: TOSHIBA R830 CPU: i3-2350M RAM: 美光 DDR3-1600 8G 威剛 DDR3-1333 4G*2 VGA: Intel HD Graphic 3000 8G*1 4G*2 差距 PassMark Rating: 1180.1 1241.8 5.2% CPU Mark: 2933.0 2976.6 1.4% 2D Graphics Mark: 425.5 431.4 1.3% 3D Graphics Mark: 292.0 316.1 8.3% Memory Mark: 1370.7 1711.2 24.8% Disk Mark: 692.1 693.3 0.2% Memory 細項 Database Operations: 48.1 52.5 9.1% Read Cached: 15824.6 15904.2 0.5% Read Uncached: 7614.0 9057.6 19.0% Write: 4296.6 8021.1 86.7% Available RAM: 5582.8 5806.0 4.0% Latency: 31.5 30.4 -3.0% Threaded: 9400.9 17909.1 90.5% -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.39.189.162

09/11 00:00, , 1F
推測試
09/11 00:00, 1F

09/11 00:13, , 2F
也許雙通道對實際影響並不大,比跑分軟體差更少,因為
09/11 00:13, 2F

09/11 00:16, , 3F
CPU的資料存取先天上隨機存取都在某段記憶體附近,被
09/11 00:16, 3F

09/11 00:18, , 4F
cache命中的機會很高,連續大量存取記憶體的場合很少
09/11 00:18, 4F

09/11 00:21, , 5F
推測試
09/11 00:21, 5F

09/11 00:22, , 6F
基本上a大說的應該是事實,除非你的程式都在IO,那才
09/11 00:22, 6F

09/11 00:23, , 7F
會有顯著的差異(我想那或許是修圖之類的吧)
09/11 00:23, 7F

09/11 00:23, , 8F
至於影片轉檔之類的,我想會卡在更下層級的Disk IO
09/11 00:23, 8F

09/11 00:25, , 9F
以現在cache動輒數MB的情況下,程式不太會跳那麼多
09/11 00:25, 9F

09/11 00:28, , 10F
影片轉檔好像很少卡在HDD I/O
09/11 00:28, 10F

09/11 00:32, , 11F
都卡在CPU/GPGPU嗎?...XD
09/11 00:32, 11F

09/11 00:33, , 12F
嗯 雙通道我到是沒有特別注意
09/11 00:33, 12F

09/11 00:37, , 13F
10次...推毅力 不過應該去掉最高最低值 取平均
09/11 00:37, 13F

09/11 00:43, , 14F
跑這個一般都抓最高比吧?
09/11 00:43, 14F

09/11 01:02, , 15F
廣告或宣勢類的比較,才會偏向用極端值吧…
09/11 01:02, 15F

09/11 01:04, , 16F
當然是去掉詭異極端值的最高啊
09/11 01:04, 16F

09/11 01:15, , 17F
詭異極端值…?
09/11 01:15, 17F

09/11 01:24, , 18F
嗯...跑CPU不太會出現 但是測顯卡就常常有那種詭異的
09/11 01:24, 18F

09/11 01:25, , 19F
FPS CPU的話我覺得去掉那種特別低的比較起來差距都不
09/11 01:25, 19F

09/11 01:26, , 20F
會太大吧...測試基準沒問題抓最高會有啥問題嗎?
09/11 01:26, 20F

09/11 01:52, , 21F
推這邊見解, E3跟Hathwell應該是對存取有優化
09/11 01:52, 21F

09/11 01:53, , 22F
不過跑分已經快變成另一種online game的情況下
09/11 01:53, 22F

09/11 01:54, , 23F
真的是要看自己的用途去決定是否有效用
09/11 01:54, 23F

09/11 02:46, , 24F
Latency不是越低越好嗎
09/11 02:46, 24F

09/11 03:25, , 25F
Good
09/11 03:25, 25F

09/11 06:56, , 26F
Latency是低的比較好嗎? 有數據有給推
09/11 06:56, 26F

09/11 07:06, , 27F
Latency google翻譯延遲時間
09/11 07:06, 27F

09/11 09:55, , 28F
CL理論上低的好 但是Ram體質不夠好設太低會當掉
09/11 09:55, 28F
文章代碼(AID): #1IBq6-bP (PC_Shopping)
文章代碼(AID): #1IBq6-bP (PC_Shopping)