قام الموقع الشهير HardOCP بعمل مراجعة على البطاقات الحديثة في وضعيتي CF/SLI مع ثلاث شاشات لكي يرى الأداء الذي تقدمه كل منصة والأهم : السعر مقابل الأداء الذي تقدمه كل منصة






ساعد حجم الذاكرة الكبير بطاقات HD6900 في التفوق على بطاقات GTX500 وخصوصاً مع مستوى تنعيم حواف 8X







































The Bottom Line

It all comes down to pricing, and a pair of GeForce GTX 580 cards is going to cost you over $1000 right now. That is a lot of money. It is a significant cost for gaming performance for most people. While it seems that speaking in GPU performance dual-GTX 580 GPUs are faster than dual-Radeon HD 6970 GPUs, the fact is they do have less memory capacity. For a higher price, you are getting less of a chance to actually use those higher settings. For all that performance the GTX 580 has, it could be held back in a multi-GPU configuration because of its memory capacity. And one thing all us multi-display gamers know is that AA becomes a lot more valuable as you scale resolutions to larger amounts of pixel real estate.


"بطاقتي GTX580 تأتيان بسعر أعلى كثيراً وقد لا تستطيع تشغيلهما أعلى إعدادات نظراً لحجم الذاكرة الأقل"

The GTX 580 price almost doesn’t seem worth it when you consider a pair of Radeon HD 6970 video cards will cost you $698, saving you a whopping $300. For that price savings you get more memory, which has the chance to allow higher playable settings, and performance that at times beats GTX 580 SLI and at other times cuts in under it, depending on the game.

"بطاقتي HD6970 CF تحصلان على أداء أعلى أحياناً من بطاقتي GTX580 SLI وأحياناً أقل منهما قليلاً حسب اللعبة مع توفير 300 دولار والحصول على حجم ذاكرة أعلى"

The GeForce GTX 570 SLI is in an even worse position, its raw GPU performance is great, and it has good SLI scaling. However, it is severely held back by its memory capacity. We experienced many times that we could not use higher settings, or had to lower the resolution, because of that. The performance is there, but the ability to utilize that performance is not. Since a pair of GeForce GTX 570 video cards will run you $698, the same price as two Radeon HD 6970 video cards, it just isn’t worth it. For the same price as two GTX 570 cards you can get two Radeon HD 6970 video cards with a much higher memory capacity, and better performance. Even a pair of Radeon HD 6950 video cards becomes appealing when you look at its low price of $598 (or $558 after rebate) for two cards, which will save you another $100+ and still provide more memory and a good gameplay experience in AMD Eyefinity.


"وضع بطاقتي GTX570 SLI أسوأ حالاً فعلى الرغم من قوة النواة الممتازة وزيادة الأداء مع ال SLI إلا أن نقص الذاكرة جعلنا في أحيان كثيرة نقلل الإعدادات أو حتى نقلل الدقة وبما أن سعر بطاقتي GTX570 هو نفس سعر بطاقتي HD6970 فال GTX570 لا يستحق وحتى أمام بطاقتي HD6950 "

You just can’t beat the low prices AMD has set on the Radeon HD 6950 and Radeon HD 6970. Where the last generation of AMD GPU was neutered when it came to CrossFireX scaling, the 6970 and 6950 are "fixed" in that regard.

When running a multi-GPU configuration, memory capacity does matter at Eyefinity resolutions, and these video cards can be had cheaper than the competition. If you flat out want the highest raw performance, we have to say that is the GeForce GTX 580 SLI, depending on the game, but its memory capacity may hold you back if you are running NV Surround. For the best value, it is clearly the Radeon HD 6950 and Radeon HD 6970 CrossFireX setups. That is quite a change from the song we sang a few short months ago when the 5870 CrossFireX was destroyed by GTX 480 SLI


يبدو أنني أحسنت في اختياري لبطاقتي HD6970 مع الثلاث شاشات

المصدر :

https://www.hardocp.com/article/2011...570_sli_review