Geforce GTX 285 reviewed
Nvidia's Geforce GTX 285 has to prove its capabilities in nine games and 3DMark Vantage, if it is a worthy successor for the GTX 280. PC Games Hardware also checks overclocking, extreme FSAA modes, loudness and power consumption.
Geforce GTX 285 reviewed: Introduction
Today Nvidia's Geforce GTX 285 is officially introduced. The card with the 55 nm GPU GT200b is supposed to replace the GTX 280 and to heat up the price competition with the Radeon graphics cards. Besides a slight increase of the clock speeds Nvidia only switched to a 55 nanometers GPU structure and cost-optimized the PCB layout and the cooler.
The benchmark review with nine games like Left 4 Dead (dt.), Fallout 3, Race Driver Grid, Crysis Warhead or Stalker Clear Sky reveals if this is enough to compete with AMD's cards, which became much cheaper in the meantime, and the GTX 280. Additional tests with extreme FSAA modes like 16xS and overclocking experiments with Supersampling FSAA push the card to the limits.
Geforce GTX 285 - Details of board, RAM and cooler
We already introduced the new Geforce card in every detail at the paper launch. Therefore we summarized the technical specifications in the table below.
Technical specifications Geforce GTX 285
|Manufacturer||Nvidia Geforce||AMD Radeon|
|Graphics card||GTX 295*||GTX 285||GTX 280||GTX 260-216||9800 GTX+||8800 GTX||HD 4870 X2*||HD 4870||HD 4850||HD 3870|
|Ca. price (Euro)||460.-||350.-||300.-||230.-||140.-||280.-||390.-||190.-||130.-||100.-|
|Chip||2 x GT200b||GT200||GT200||GT200(b)||G92(b)||G80||2 x RV770||RV770||RV770||RV670|
|Transistors (Mio.)||2 x 1.400||1.400||1.400||1.400||754||681||2 x 965||965||965||666|
|Frequency core (MHz)||576||648||602||576||738||575||750||750||625||775|
|Frequency Shader ALUs (MHz)||1.242||1.476||1.296||1.242||1.836||1.350||750||750||625||775|
|Frequency memory (MHz)||999||1.242||1.107||999||1.100||900||1.800||1.800||1.000||1.125|
|Shader version||4.0||4.0||4.0||4.0||4.0||4.0||04. Jan||04. Jan||04. Jan||04. Jan|
|Shader ALUs||2 x 240||240||240||216||128||128||2 x 800||800||800||320|
|Memory size (MiByte)||2 x 896||1.024||1.024||896||512||768||2 x 1.024||512||512||512, 1.024|
|Memory bus (Bit)||2 x 448||512||512||448||256||384||2 x 256||256||256||256|
|Type of memory||GDDR3||GDDR3||GDDR3||GDDR3||GDDR3||GDDR3||GDDR5||GDDR5||GDDR3||GDDR4|
|MAD performance (GFLOP/s)||2 x 596,2||708,5||622,1||536,5||470||345,6||2 x 1.200||1.200||1.000||496|
|Texture fillrate (MTex/s)||2 x 46.080||51.840||48.160||41.472||47.232||36.400||2 x 30.000||30.000||25.000||12.400|
|Memory bandwidth (MiByte/s)||2 x 111.888||158.976||141.696||111.888||70.400||86.400||2 x 115.200||115.200||64.000||72.000|
|Multi Sampling, max.||8x||8x||8x||8x||8x||8x||8x||8x||8x||8x|
|Anti Aliasing, max.||16xQ||16xQ||16xQ||16xQ||16xQ||16xQ||24x CFAA||24x CFAA||24x CFAA||24x CFAA|
|Multi GPU||SLI||SLI, 3-W.-SLI||SLI, 3-W.-SLI||SLI||SLI, 3-W.-SLI||SLI||Crossfire X||Crossfire X||Crossfire X||Crossfire X|
|PCI-E connectors (6-Pin/8-Pin)||1x/1x***||2x/0x||1x/1x***||2x/0x||2x/0x||2x/0x||1x/1x||2x/0x||1x/0x||1x/0x|
* Individual values don't necessarily double for multi GPU cards
** MUL performance limited
*** 8-pin connector is compulsory
As mention, the PCB has been modified. On the one hand this was achieved because of the TDP which has been lowered from 236 watt to 183 watt and the appropriate cooler. On the other hand there was the intention to lower costs in order to sell the cards for a lower price. AMD had put a lot of pressure on Nvidia with the HD 4870 series.
Even without the heat spreader, which makes the graphics processor appear bigger than it actually is, the Die of the old 65 nm GT200 is, according to our digital caliper, about 606 mm² big (CPU-Z displays 576 mm²). TSMC, who produce the GT200 and GT200b, specify a linear shrink of 10 percent for the new architecture. If Nvidia was able to make full use of those possibilities, the Die size of the GT200b should be about 490 mm² - this is still almost twice the size of the RV770 Die which is working on AMD's Radeon HD 4800 cards.
Nvidia doesn't only lower the Die size, but also cuts costs on the board and the cooler. Instead of the full metal cover of the old GTX 2x0 series the GTX 285 only has the metal frame around the GPU, which has been used on the first Geforce 8800 cards already. The cooler has less heat pipes and is a little smaller - the radial fan is still the same. Due to the lower TDP, the 8-pin power connector isn't required for the GTX 285 anymore and the card only needs two 6-pin plugs. The used GDDR3 RAM is from Hynix's currently fastest selection and specified for 1,300 MHz - on the GTX 285 it is clocked to 1,242 MHz.
- 1Geforce GTX 285 reviewed: Introduction
- 2Geforce GTX 285 reviewed: Point of View Exo-Edition
- 3Geforce GTX 285 reviewed: Power Consumption, Loudness and Cooling
- 4Geforce GTX 285 reviewed: Test system and benchmark selection
- 5Geforce GTX 285 reviewed: Overclocking
- 6Geforce GTX 285 reviewed: Benchmark 3DMark Vantage
- 7Geforce GTX 285 reviewed: Benchmark Call of Duty: World at War (dt., DirectX 9)
- 8Geforce GTX 285 reviewed: Benchmark Crysis Warhead (DirectX 10)
- 9Geforce GTX 285 reviewed: Benchmark Fallout 3 + HD Texture pack 1.00(DirectX 9)
- 10Geforce GTX 285 reviewed: Benchmark Far Cry 2 (DirecX 10)
- 11Geforce GTX 285 reviewed: Benchmark Half-Life 2 (dt.): Episode 2 + Cinematic-Mod 9.5 & HD-Addon (DirectX 9)
- 12Geforce GTX 285 reviewed: Benchmark Left 4 Dead (dt., DirectX 9)
- 13Geforce GTX 285 reviewed: Benchmark Race Driver Grid (DirectX 9)
- 14Geforce GTX 285 reviewed: Benchmark Stalker Clear Sky (DirectX 10 & 10.1)
- 15Geforce GTX 285 reviewed: Extreme FSAA modes
- 16Geforce GTX 285 reviewed: Conclusion
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