→ CloudJ:GX2怎會是單卡咧 明明就是兩張連在一起的卡阿XD 04/19 17:03
→ oijkue:囧...應該說單卡上有兩張PCB連在一起 04/19 17:08
推 milen:單卡雙板 04/19 17:50
單卡外觀
http://www.mvktech.net/images/reviews/7900gx2/nvidia-79gx2-bg-000.jpg
單卡橋接兩張PCB的slot
http://www.mvktech.net/images/reviews/7900gx2/nvidia-79gpu-bg-03.jpg
同上,橋接晶片
http://www.mvktech.net/images/reviews/7900gx2/nvidia-79gpu-bg-02.jpg
測試結果:
7900GX2單卡=2GPU
AMD Athlon 64 FX-60 2.6GHz Dual Core Processor
ABIT AN8 32X (nForce4 SLI X16) Mainboard
1GB Corsair TWINX Dual Channel Memory
NVIDIA GeForce 7900 GX2 (Single/Quad SLI)
Western Digital 150GB Raptor (10.000rpm) Hard Disk
Enermax 600W (SLI Ready) Power Supply
Samsung Syncmaster 244T-BK 24" LCD Display
3DMARK03:
7900GX2 單卡 (500MHz/1.20GHz)= 29001
單卡超頻 (567MHz/1.43GHz)= 32329
7900GX2 quad SLI (500MHz/1.20GHz)= 34640
超頻 (567MHz/1.43GHz)= 36736
7900GTX 單卡 (650MHz/1.60GHz)= 23154
SLI (650MHz/1.60GHz)= 36731
3DMARK05:
7900GX2 單卡 (500MHz/1.20GHz)= 12915
單卡超頻 (567MHz/1.43GHz)= 13411
7900GX2 quad SLI (500MHz/1.20GHz)= 12797
超頻 (567MHz/1.43GHz)= 13075
7900GTX 單卡 (650MHz/1.60GHz)= 11052
SLI (650MHz/1.60GHz)= 15514
3DMARK06:
7900GX2 單卡 (500MHz/1.20GHz)= 7924
單卡超頻 (567MHz/1.43GHz)= 8567
7900GX2 quad SLI (500MHz/1.20GHz)= 8492
超頻 (567MHz/1.43GHz)= 8865
7900GTX 單卡 (650MHz/1.60GHz)= 6773
SLI (650MHz/1.60GHz)= 10138
結論:依照以上的測試結果來看,Quad SLI技術的宣示意義大於實際意義
畢竟目前還在初期階段,不論是硬體或者是驅動程式都還有進步的空間
單從GPU數量來講,2+2不一定大於1+1的效能
source:
http://www.mvktech.net/content/view/3074/0/1/0/
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