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HD 2900XT 512Mb
Caratteristiche
* Codename: R600
* Process technology: 80 nm
* ~700 million transistors
* Unified architecture with an array of common processors for stream processing of vertices and pixels as well as other data types
* Hardware support for DirectX 10, including the new shader model - Shader Model 4.0, stream output
* 512-bit memory bus, eight 64-bit controllers connected with a ring bus
* Core clock: 750 MHz
* 320 scalar floating point ALUs (integer and floating point formats, IEEE 754 FP32 support)
* 4 texture units, support for FP16 and FP32 components in textures
* 32 texture address units (see the details)
* 80 TMUs (see the details)
* 16 bilinear filtering units with FP16 texture filtering at full speed and support for trilinear and anisotropic filtering for all texture formats
* Dynamic branching in pixel and vertex shaders
* 16 ROPs supporting antialiasing with software fetches of more than 16 samples per pixel, including FP16 and FP32 frame buffer formats. Peak performance is up to 16 samples per cycle, Z only mode - 32 samples per cycle
* 8 multiple render targets (MRT)
Specifiche reference board
* Core clock: 750 MHz
* Unified processors: 320
* TMU: 16; ROP: 16
* Effective memory frequency: 1650 MHz (2*825 MHz)
* Memory type: GDDR3
* Memory size: 512 MB
* Memory bandwidth: 106 GB/sec.
* Maximum theoretical fillrate: 12.0 gigapixel per second.
* Theoretical texture sampling rate: 12.0 gigatexel per second.
* CrossFire connector
* PCI-Express 16C... bus
* 2 × DVI-I Dual Link, video output up to 2560×1600
* TV-Out, HDTV-Out, HDCP support, HDMI adapter
* Power consumption: up to 215 Watt
* MSRP $399
Ultima modifica di il_mitch; 26-06-2007 alle 11:23:19
ex utente della sezione Hardware *esiste un solo mod* I siti seri per parlare di hardwaresono altri. Chiarimenti sumsn o inprivato.
* Codename: RV630
* Process technology: 65 nm
* 390 million transistors
* Unified architecture with an array of common processors for stream processing of vertices and pixels as well as other data types
* Hardware support for DirectX 10, including the new shader model - Shader Model 4.0, stream output
* 128-bit memory bus, two 64-bit controllers
* Core clock: 600-800 MHz
* 120 scalar floating point ALUs (integer and floating point formats, IEEE 754 FP32 support)
* 2 texture units, support for FP16 and FP32 components in textures
* 16 texture address units (see the details)
* 40 TMUs (see the details)
* 8 bilinear filtering units with FP16 texture filtering at full speed and support for trilinear and anisotropic filtering for all texture formats
* Dynamic branching in pixel and vertex shaders
* 4 ROPs supporting antialiasing with software fetches of more than 16 samples per pixel, including FP16 and FP32 frame buffer formats. Peak performance is up to 4 samples per cycle, Z only mode - 8 samples per cycle
* 8 multiple render targets (MRT)
* Integrated support for two RAMDACs, two Dual Link DVI ports, HDMI, HDTV
RADEON HD 2600 XT
* Core clock: 800 MHz
* Unified processors: 120
* TMU: 8; ROP: 4
* Effective memory frequency: 2200 MHz (2*1100 MHz)
* Memory type: GDDR3/GDDR4
* Memory size: 256 MB
* Memory bandwidth: ~35 GB/sec.
* Maximum theoretical fillrate: 3.2 gigapixel per second.
* Theoretical texture sampling rate: 6.4 gigatexel per second.
* CrossFire connector
* PCI-Express 16C... bus
* 2 × DVI-I Dual Link, video output up to 2560×1600
* TV-Out, HDTV-Out, HDCP support, HDMI adapter
* Power consumption: about 45 Watt
* MSRP $199
* Codename: RV610
* Process technology: 65 nm
* 180 million transistors
* Unified architecture with an array of common processors for stream processing of vertices and pixels as well as other data types
* Hardware support for DirectX 10, including the new shader model - Shader Model 4.0, stream output
* 64-bit memory bus, one 64-bit controller
* Core clock: 525-700 MHz
* 40 scalar floating point ALUs (integer and floating point formats, IEEE 754 FP32 support)
* One texture unit, support for FP16 and FP32 components in textures
* 8 texture address units (see the details)
* 20 TMUs (see the details)
* 4 bilinear filtering units with FP16 texture filtering at full speed and support for trilinear and anisotropic filtering for all texture formats
* Dynamic branching in pixel and vertex shaders
* 4 ROPs supporting antialiasing with software fetches of more than 16 samples per pixel, including FP16 and FP32 frame buffer formats. Peak performance is up to 4 samples per cycle, Z only mode - 8 samples per cycle
* 8 multiple render targets (MRT)
* Integrated support for two RAMDACs, two Dual Link DVI ports, HDMI, HDTV
Dai dati che riporti, la 2900XT con 1GB GDDR4 sembrerebbe avere delle frequenze sensibilmente ritoccate. In pratica mi sembra un modello XTX.
I prezzi li ipotizzo sui 600€, significa considerevolmente più di una GTX. Spero che il divario prestazionale ci sia e che giustifichi questo prezzo.
Ex-utente della sezione Hardware.
Modefecazione in marrone abbondante. Chiarimenti mi paiono inopportuni.
C'è una correzione da fare: la scheda è stata inserita in preordine sul sito di Extreme PC e le freq. riportate sono 825/2100.
Ati aveva rilasciato le specifiche del modello reference HD 2900 XT (1Gb GDDR4) con freq. di 750/2000, quindi questa può essere anche un modello overcloccato di fabbrica...
ps. Ati indica 550~600$ come prezzo.
Ultima modifica di il_mitch; 6-06-2007 alle 13:37:36
ex utente della sezione Hardware *esiste un solo mod* I siti seri per parlare di hardwaresono altri. Chiarimenti sumsn o inprivato.
rispettivamente screen dal video demo di Ruby (quello della presentazione della scheda), Tesselation e Team Fortess 2, gioco di Valve che uscirà con Half-Life 2: Episode 2
Ultima modifica di redfalcon; 6-06-2007 alle 14:22:33