AMD在昨晚正式发布了RX 580/570显卡,和之前曝光的数据一样,RX 580/570主要是RX 480/470的提频版,RX 580核心频率从1266MHz提升至1340MHz,RX 570核心频率从1206MHz提升至1244MHz,同时RX 570显存频率从6.6Gbps提升至7Gbps,RX 580外接供电接口升级为8Pin,标称TDP为185W,其他规格保持一致。
另外VC曝了一个非常有趣的事情,RX 580有两种核心,Polaris 20 XTR和Polaris 20 XTX,虽然两者规格完全看不出区别,但从VC隐晦的描述中我们可以大概猜出XTR的体制要比XTX好一些,基本频率能超过1.4GHz的都是XTR,而媒体评测拿到的卡应该都是高频的非公版,基本都是XTR。Okay, but what’s XTR, XTX and XL? Those are Polaris 20 graphics processor variants. It may an important factor for your purchase. If you are after best performing Radeon RX 580 graphics card, grab XTR-based model, if you just want RX 580 on a budget, get XTX version instead.
But how to distinguish one from the other? Well, unless the manufacturer specifically states it’s XTR, it may be hard to guess. Basically, any model going past 1400 MHz out of the box is likely XTR-based and there aren’t that many of those. In other words, Polaris 20 XTR is basically highest-binned chip designed for best performance. Some reviewers will be using XTR cards others will have XTX-based samples. Unfortunately, that’s all we know right now.
RX 580用了8Pin外接供电并标称185W功耗,想必大家最关心的就是功耗问题。引援Toms的评测可以看到RX 580 超白金在高频高负载时功耗的确会超过RX 480,但游戏负载和低负载时表现均比RX 480好,并且功耗基本在230W左右,非公版8+6Pin外接供电足已满足。
频率上,RX 580超白金运行4K 游戏时,频率基本稳定在1.4GHz-1.45GHz之间。
最后价格方面
- RX 580 8GB:1899-1999元
- RX 580 4GB:1699-1799元
- RX 570 4GB:1399-1499元
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