R520 = X1800
The high-performance models fall under the designation of Radeon x1800, codenamed R520. There are two models introduced under the X1800 heading: the X1800 XT and the X1800 XL.
Radeon X1800 XT
- 625 MHz Core
- 1.5 GHz Memory
- 512 MB / 256 MB GDDR3
- $549 / $499 MSRP
Radeon X1800 XL
- 500 MHz Core
- 1.0 GHz Memory
- 256 MB GDDR3
- $449 MSRP
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