معرفی و بحث پیرامون Hd 4850 / 4870

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OPTION

SETTING

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option

Crysis Test Settings

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AMD's cards have always been known for better power consumption and efficiency than NVIDIA cards but in this case the all three GPUs are very comparable. The HD 4850 does use about 16 watts less power than the 9800 GTX and 18 watts less at load - enough to warrant a 6-8% advantage over the G92.

Performance, Pricing and Availability

The AMD Radeon HD 4850 512MB card is a good performing card that is able to match both the GeForce 8800 GT and the 9800 GTX card in our initial preview of just a couple of major gaming titles. NVIDIA has some more tricks up their sleeve though with a little part called the GeForce 9800 GTX+ meant solely to rain on AMD's launch day parade. Whether or not that will pan out has yet to be seen.

The estimated MSRP on the HD 4850 512MB cards is $199 - low enough to be competitive in the market against NVIDIA's solutions. Currently the GeForce 9800 GTX is selling for no less than $269 while the 8800 GT cards are going for anywhere between $159 and $209.

Availability of the HD 4850 should be immediate and no later than June 25th - you'll have to wait a couple weeks longer to get your hands on the HD 4870 graphics cards

[MR PC 1849]

test system

Motherboard:

EVGA 680i SLI (Provided by EVGA)

Processor:

Intel Core 2 Duo 6800 Extreme edition (Provided by Intel)

Memory:

OCZ FlexXLC PC2 9200 5-5-5-18 (Provided by OCZ)

during testing CL5-5-5-15-CR2T 1066MHz at 2.2V

PSU:

OCZ Silencer 750 Quad Black (Provided by OCZ)

Hard disk:

Seagate Barracuda 7200.9 80GB SATA (Provided by Seagate)

CPU-Cooler:

Freezer 7 Pro (Provided by Artic Cooling)

Case Fans:

Artic Cooling - Artic Fan 12 PWM

Artic Cooling - Artic Fan 8 PWM

[MR PC 1849]

The system used was :

Processor : Intel Core 2 Extreme QX9770

Motherboard : Asus Striker II

Memory : 4 GB DDR3 1066

OS : Windows Vista SP1

Nvidia Driver : Forceware 177.34

Ati Driver : Catalyst 8.5 , Catalyst beta for the Radeon HD 4850

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Test System

Motherboard: Gigabyte GA-X48T-DQ6 (Intel X48 Chipset) with version F4 BIOS

Processor: Intel E8200 Core 2 Duo 2.66GHz (Overclocked to 3.6 GHz)

System Memory: Corsair PC3-14400 DDR3 1800MHz

Audio: HT Omega Claro Plus+ AD8620BR Op Amp Sound Card

Disk Drive 1: OCZ SATA-II 32GB 2.5-Inch SSD OCZSSD2-1S32G

Disk Drive 2: (Paging File) MemoRight GT MR25.2-064S 2.5-Inch 64GB SATA SSD

Optical Drive: ASUS BC-1205PT SATA Blu-ray Disc Optical Drive

Enclosure: Lian Li PC-B25B Black Aluminum Mid-Tower ATX Case

PSU: ePower Technology EP-1200P10 xScale 1200W PSU

Monitor: Honeywell 22-Inch LCD Monitor MT-SY-HWLM2216

Operating System: Windows XP Professional SP-3 (optimized to 16 processes at idle)

Benchmark Applications

3DMark06 v1.1.0 (8x Anti Aliasing & 16x Anisotropic Filtering)

Company of Heroes v1.71.0 (Very High Setti)

Company of Heroes v1.71.0 (Very High Settings, 16xQ CSAA)

Crysis v1.21 Benchmark (High Settings, No Anti Aliasing)

Lightsmark 2007 v1.3

Supreme Commander: Forged Alliance (Fidelity Higngs, 16xQ CSAA)

Crysis v1.21 Benchmark (High Settings, No Anti Aliasing)

Lightsmark 2007 v1.3

Supreme Commander: Forged Alliance (Fidelity High: 8x AA)

World in Conflict v1.0.0.8 Performance Test (Very High Setting: 4x AA/4x AF)

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Supreme Commander

World in Conflict

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Radeon HD 4870

800 Stream processors

750 MHz core clock

1800 MHz GDDR5 memory clock

512MB frame buffer

Max board power 160 watts

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Test System Setup

CPU

Intel Core 2 Extreme X6800 - Review

Motherboards

EVGA nForce 680i Motherboard - Review

Intel X48 Motherboard (for CrossFire testing)

Memory

Corsair TWIN2X2048-8500C4

Hard Drive

Western Digital Raptor 150 GB - Review

Sound Card

Sound Blaster Audigy 2 Value

Video Card AMD Radeon HD 4870 512MB

AMD Radeon HD 4850 512MB

BFG GeForce GTX 280 1GB

NVIDIA GeForce GTX 260 896MB

XFX 9800 GX2 1GB

BFG 9800 GTX 512MB

AMD Radeon HD 3870 512MB

Video Drivers NVIDIA Forceware 177.34 Beta

AMD Catalyst - 8.5

Power Supply PC Power and Cooling 1000 watt

DirectX Version

DX10 / DX9c

Operating System

Windows Vista Ultimate 64-bit

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Bioshock

Company of Heroes

Call of Duty 4

Call of Juarez

Lost Planet

World in Conflict

Unreal Tournament 3

Crysis

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Launch price compare:

HD 4870 299USD

GTX 260 399USD

HD 4870 VS GTX 280

Launch price compare:

HD 4870 299USD

GTX 280 649USD

HD 4870 and HD 4850

HD 4870 vs 3870X2

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