The Radeon HD 4890 was a performance-segment graphics card by ATI, launched on April 2nd, 2009. Built on the 55 nm process, and based on the RV790 graphics processor, in its RV790 XT variant, the card supports DirectX 10.1.

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2009年4月1日 · Sapphire's new HD 4890 comes with 1 GB of GDDR5 memory and yet unseen clock speeds offering much better performance at a competitive price. Will that be enough to beat NVIDIA's new GeForce GTX 275 ?

2010年5月28日 · ATI HD4890评测,自2008年6月ATI发布RV770以来时间已过去了半年有余,漫长的等待终于让我们迎来了新的ATI最强性能单芯HD4890(研发代号:RV790).,显卡,评测 ,Chiphell - 分享与交流用户体验

2009年4月2日 · Radeon HD 4890是继Radeon HD 4870 X2、Radeon HD 4870、Radeon HD 4850和Radeon HD 4830之后，又一款Radeon HD 4800系列新成员，通过型号不难看出，这款产品为单GPU产品，性能/规格要高于Radeon HD 4870，问鼎AMD-ATI最强单GPU显卡。

Sapphire HD 4890 850 MHz: 975 MHz: Sapphire HD 4890 Atomic. 1000 MHz: 1050 MHz: Sapphire HD 4890 New Edition. 850 MHz: 975 MHz: 1x DVI 1x HDMI 1x DisplayPort ... Nov 6th, 2024 AMD Ryzen 7 9800X3D Review - The Best Gaming Processor; Controversial News Posts. MSI Doesn't Plan Radeon RX 9000 Series GPUs, Skips AMD RDNA 4 Generation Entirely (146)

Radeon HD 4890定于四月份发布，价格在199美元到249美元之间，预计届时Radeon HD 4850/4870会进一步降价。 1、核心：55nm RV790. 2、Stream 流处理器 数量：800个. 3、频率：核心850MHz、显存975MHz (等效3800MHz) 4、显存：256-bit 1GB GDDR5. 5、发布时间：4月9日 (原定6日) 6、可用性： 显卡 已出货给经销商和评测媒体. 7、性能：内部测试显示比RV770 Radeon HD 4870快大约7% 8、价格：预计建议零售价249美元. 9、驱动程序：催化剂9.4已经 …

The Radeon HD 4890 comes with 2 GB of GDDR5 memory, clocked at 975 MHz. It has a 256 bit wide memory bus, which results in 124.8 GB/s memory bandwidth. The GPU supports PCI Express 2.0 interface, and uses 2 slots on the motherboard.

AMD ATI Radeon HD 4890 £200 is currently the sweet spot for graphics cards with lots of performance available for your money. With its new card ATI makes this doubly so.